Being completely free, open source, and fully customizable Android mobile platform, allows application developers to unleash their creativity and in the same time giving end users the privilege to experience freedom of experimenting new possibilities.

So if you are the Google Android Mobile User and searching for some Great Application for your Phone to enhance your productivity. Here is 21 useful Android Productivity apps that will help you work smarter, get more accomplished, save time and stay organized.

1. Quickoffice for Captivate

   

   The first and only Microsoft Office productivity suite for Android devices to View and Edit Microsoft Word, Excel & PowerPoint files with integrated access to multiple remote storage providers. Access, transfer, share and manage files on Google Docs, Dropbox, Box.net, and MobileMe. – Quickoffice

2. Notebook

   

   Notebook is the most elegant notepad on the Market. It uses a classic 18th-century font. Features: – write, save, edit notes; – date added to notes; – search notes; – export to SD card. Upgrade to paid version for email, import & password protection. – Notebook

3. Vlingo for Android

   

   Vlingo for Android combines fast and accurate voice to text technology with the intelligence to listen to what you say, and quickly connect you with people, businesses and activities so that you can get things done while on the go. – Vlingo for Android

4. Android Agenda Widget

   

   Android Agenda Widget is a home screen widget that allows you to view events and tasks from Google calendar, Motorola Droid Corporate Calendars (Exchange), (Google) Exchange Activesync Calendar, LG corporate calendar support (in testing), Astrid, SSI gTask, Dato GTask, etc.. – Android Agenda Widget

5. Dropbox for Android

   

   Dropbox for Android is a dropbox android version for android mobile phone user. where user can access all the contents of their Dropbox . You can easily stream music and movies in your Dropbox straight to your Android. Upload photos from your Android and email its public link to a friend in less than a minute. – Dropbox for Android

6. GDocs

   

   GDocs is a simple text editing notepad that allows you to access, view, edit and sync documents directly from your Google Docs account. It allows you create, import/export and send documents. – GDocs

7. OI File Manager

   

   OI File Manager for Android is an open file manager that seamlessly cooperates with other applications. it allow you to browse your SD card, create directories, rename, move, and delete files. It also acts as an extension to other applications to display “Open” and “Save” dialogs. – OI File Manager

8. Tag ToDo List manager

   

   It allow you to organize the tasks into tags (just as you organize files in folders). Basically each tag is a separate todo list. you can tag for personal tasks, one for school (or work) and one for friends related tasks. – Tag ToDo List manager

9. Astrid Task/Todo List

   

   Astrid is a Task tracking and todo list manager for Google Android platform built with your productivity in mind. it has simple, easy to use GUI that help you to get stuff done. feature included tagging, reminders, Remember-the-Milk sync, adding to calendar, and many more. – Astrid Task/Todo List

10. AK Notepad

    

    With AK Notepad, you can write anything you want e.g. shopping list, etc. Set a quick reminder for your note or share it to others by SMS or email. Access your note quicker by creating shortcut on your home screen. The notepad is customizable and simple to use. – AK Notepad

11. OI Notepad

    

    The OpenIntents Notepad is based on Google’s open source sample application Notepad that is provided with the Android SDK. OI Notepad allows to create, edit, send, and delete notes. feature included easy to send notes, Add tags, Filter notes, Sort notes alphabetically, or by modification date, Open files from SD card or save files to SD card. – OI Notepad

12. handyCalc calculator

    

    handyCalc is a powerful calculator with automatic suggestion and solving which makes it easier to learn and use. With almost all the features you can imagine on a calculator, waiting for you to explore. – handyCalc Calculator

13. Note Everything

    

    Note Everything is a feature-rich note (notepad) application for android. User can easily organize there notes in folders and subfolders also you can add text-notes, paint-notes and voice-notes combined in one application. features included Different note types, easy to Organize your notes in folders, Recycle bin, easy to share your notes, easy to send notes to calendar, Receive notes from other apps, Search your notes with QSB functionality, search within your notes, wikiNotes, Quick note widget, status quick notes, support for live folder, Multiselect for batch processing, highly customizable, etc.. – Note Everything

14. kooaba Paperboy

    

    kooaba Paperboy makes print publications interactive. Share exciting articles. Explore related information. Remember good reads. All of this by snapping pictures of your favorite newspapers and magazines. Paperboy is an application available for iPhone and Android. Share exciting pages on Facebook, via Twitter or email. – Remember good reads on my.kooaba.com or on Evernote – Explore related information. – Kooaba Paperboy

15. Springpad

    

    Springpad is a free virtual notepad and personal organizer to save and use just about anything – recipes, products, restaurants, ideas, notes, articles, and more. The Android app makes it easy for you to save the ideas, places and things you encounter while on-the-go. The app syncs with Springpadit.com, so you can access your data from any computer. Through semantic detection, Springpad automatically organizes the information for easy retrieval and enhances it with useful links and offers to save time and money. – Springpad

16. Slidescreen

    

    A complete home replacement focused on your information. Shows summary information for SMS, Gmail, Phone calls, Calendar, Google Reader, Stocks, Twitter and Facebook. – SlideScreen

17. Remember The Milk

    

    Take your tasks anywhere with this feature-packed application. See tasks located nearby, add and complete tasks on the go, organize upcoming tasks, and sync it all seamlessly with Remember The Milk. A Full-featured, with all the fields you need: task name, list, priority, due date/time, repeat, time estimate, tags, location, and URL. – Remember The Milk for Android

18. Evernote

    

    Evernote makes it easy to remember things big and small from your notable life using your computer, phone, and the web. Evernote for Android lets you capture your ideas, experiences, and inspirations as they happen, wherever you find yourself. Then easily search and find all your notes, even those created using Evernote on your desktop. – Evernote for Android

19. AndroZip File Manager

    

    AndroZip File Manager is the leading Android Platform productivity application aimed to simplify management of files and handling of compressed file formats (ZIP, RAR, TAR, GZIP, JAR, WAR, EAR, BZIP2, and 7ZIP). AndroZip can also create ZIP and ZIP based archives like APK, JAR, WAR, EAR, TAR and GZIP. Note only Win.rar Gmbh software products like WinRaR can create RAR archives.AndroZip can also open encrypted ZIP files encrypted with WinZip (256-bit AES). Some of the future releases will include 128-bit AES encryption. – AndroZip File Manager

20. Gtasks4Android

    

    Rich Google task client, simple todo and checklist tool. 2. Synchronize with Google automatically, also support local mode. 3. Scroll horizontally to switch tasklist. 4. Indent, unindent, share, etc 0.5.x * repeat task * snooze * bugfix Todo list, Task, Note pad,Google Tasks Gmail Calendar. – Gtasks4Android

21. Whiteboard

    

    Whiteboard is a power tool to help people sketch on phones, demonstrate your ideas, keep temporary notes, teach your kids, etc. 1.7.2 add rename function – Whiteboard

Free as in freedom, and free as in no cost, too!

GNU Call is a free and open source project that provide a secure and self organised VOIP (Voice over internet protocol) service to all user worldwide for private use and public administration.

It’s an perfect open source alternative for popular Skype VOIP service.

GNU Call use the open standard SIP protocol and GNU SIP Witch to create secure and self organised peer to peer mesh calling network so that the service will not rely on one single service provider.

It also work with your existing GNU SIP Witch, a server use for SIP calls which provides a method of managing and routing calls.

With GNU Call User can directly and secularly Call each other in full privacy without registering with any service provider.

The service still under development and planning to make it easy to use Internet telephony for real-time voice and video communication worldwide over the internet in fact for all forms of real-time collaboration for free.

Visit : GNU Free Call

This software has easy to use features and is flexible enough to handle projects of any magnitude. You do not need to go through huge sets of instructions in order to start using it.

It has an intuitive interface which guides you to the next step once you complete performing a task. ProtoShare helps you organize a project and work efficiently with cooperation from your co-workers.

ProtoShare helps you to bring together your web developers, accounts officers, management and marketing staffs and most importantly your clients.

ProtoShare allows you to collaborate on a single Page and accomplish your tasks. It saves your time and money and helps you to discuss issues with your team.

It has an easy user interface that helps you sail smoothly during your project. You can opt for the 30 Day free trail plan before subscribing for it.

There are 2 paid version costing $29 and $49 a month. The Support features include an active user forum where you can discuss with other user, video tutorials, webinars etc.

You can seek for assistance via mail or live chat. The $40 version has certain special features such as exporting of documents to web, HTML, Word etc.

In this version you also opt for different viewing options like the Grid view and Tree View. It also allows for custom branding.

There is an Enterprise version which can be customized by you. You can insert features according to your requirement. It allows SAAS and self hosted solutions.

It has premium support features such as priority response to your emails and customized training for its users. This version will be priced according to the number and type o features you want to use.

Features of ProtoShare

1. There are several interactive features that help you extract greater volume of feedback from your clients. It allows generation of CSS, JavaScript and HTML prototypes. You can upload Flash images and also other files.
2. You can collaborate on real time with other users. It helps you include stakeholders from the start of the project and cut down on last minute expenses. Comments and review can be easily posted using this software.
3. You can use this software with out much hassle using the simple Drag and drop technique.
4. You can undertake brainstorming sessions and review your project using Proto Share. You can view your page in multiple layouts and alter its design to suit your requirements.
5. You can easily export your prototypes to several website formats or produce complete documents and also produce their hard copy.
6. There is no software installation required. This frees you from the annoyance of software maintenance, up gradation and support. It allows safe and secured and maintenance of your data from across the world.

ProtoShare is an efficient option for crating prototypes. It helps you create visualization of products and test those prototypes. These prototypes can then be analyzed and the feasibility understood before actually starting with the product development.

Download : ProtoShare – collaborative web based prototyping tool

The software give you online platform where team members can work collaboratively on website Mockups. So no more emailing, PDFs or try to track feedback via message threads. All your designs and their feedback publish in context.

It’s an perfect mockups tool for Web and application developer who want to receive instant feedback on their design from clients.

Features of ClickDummy

1. Free online Mockups creation tool
2. Create clickable mockups collaboratively and get feedback fast.
3. Share clickable mockups online with URL provide by user
4. simple registration process
5. Make Private and public feedback
6. User friendly web interface

Download : Clickdummy

With this application, user can schedule their messages at a specific time or specific location so that you can share and surprise your friends and other instantly and easily at right time.

Also you can conduct real time conservation with more then one friend at time. All your existing mobile phone contacts and ZMS application secularly stored in the cloud.

Features of ZMS

1. Free mobile messaging service : It only use your Mobile Wi-Fi or mobile internet to send and receive message with other user at no extra cost.
2. Easy to use : Easily work with your existing mobile phone address book.
3. Multimedia : freely send and receive text, pictures, audio, video and location with any ZMS User in real time.
4. geo-localised ZMS messaging service
5. Group Chat
6. Schedule your messages at a specific time and in specific place.
7. Use ZMS as a reminder service so you never miss any special or important occasion.
8. Simple, free and smart interactive mobile messaging service.

Download : ZMS Mobile messaging service

1. FBackup (Windows)

   

   FBackup is a free backup software for personal and commercial use that backup all your important files and folders to your external or local hard driver. With FBackup, user can create multiple backup copies and schedule them to run automatically at give time. All backup compressed and stored in Zip format also allow you to backup all files and folders even the files are locked or in use by using Windows Shadow Copy features. – FBackup

2. Areca Backup (Windows, Mac OS X and Linux)

   

   Areca Backup is a simple, easy to use and free personal backup solution that allow you to select a set of files or directories to backup and choose where and how to store your backup files like simple file copy or as a zip file format. With Areca Backup, user can interact with archives and files they have, browse and track different versions of specific files, recover and view specific files, merge a set of archives. – Areca Backup

3. Amanda Network Backup ( Linux, Windows and Mac OS X )

   

   Amanda is a known as “Advanced Maryland Automatic Network Disk Archiver”. it’s an network backup and recovery software that allow network Administrative to setup  a single master backup server to backup multiple hosts over network to monitor disks, optical media or cloud based storage system. – Amanda

4. BackupPC ( Windows, Linux and Mac OS X )

   

   BackupPC is a high performance Perl based system backup solution with web based frontend for Linux and windows. it help you to completely backup Linux and windows based systems into a server’s disk. features included file level de-duplication, inbuilt compression scheme, synthetic backups to reduce network traffic. – BackupPC

5. Bacula ( Linux )

   

   Bacula is a open source, enterprise grade network backup and restore solution to manage backup, recovery, and verification of backup data across a network of computers of different kinds. it’s an ideal network backup tool for Linux, Unix, Mac and Windows. – Bacula Network backup

6. Box Backup ( Windows, Linux and Mac OS X )

   

   Box Backup is an open source fully automatic backup system that backup all data on the server in files on a file system, so need to use any special device, archive or tape are required. – Box Backup

7. Cobian Backup ( Windows )

   

   Cobian Backup is a free window backup software written in Delphi language. it provide support for FTP, Unicode, Compression, Encryption, incremental and differential backup and also allow user to configure and schedule regular backup routines. – Cobian Backup

8. Comodo Backup ( Windows )

   

   Comodo Backup is a powerful yet easy to use, free data backup software to create instant backup for your data in a various storage media to protect your data against damage or loss. it has simple, easy to use task oriented user interface which help novice user to easily take backup instantly. – Comodo Backup

9. Create Synchronicity ( Windows and Linux )

   

   Create Synchronicity is a open source lightweight backup and synchronization tool for window that allow user to protect their data and keep your data up-to-date regularly. – Create Synchronicity

10. Duplicati ( Windows, Linux and Mac OS X )

    

    Duplicati is a free and open source backup client with a user friendly interface that secularly stores encrypted, incremental, compressed data backups on cloud storage services and remote file servers. it written in C# programming language and available for all major platform like Windows, Linux, and Mac OS X. it has built-in scheduler that make your data up-to-date always. – Duplicati

11. Partimage ( Linux )

    

    Partimage is a open source disk backup software that backup your partitions only from the used portions of the partition. (that why it only works for supported file system). it save your partitions in many formats to a disk image file. – partimage

12. QtdSync ( Windows )

    

    QtdSync is a powerful yet simple portable backup tool for windows. The software backup your local as well as remote data into two mode one is Differentiell mode and another one is Synchronization mode. User can also schedule their backup by date and time on drive plugin, Support for command line and Folder binding for specific drives, Easy configuration of multiple virtual directories, Drag and drop and user account management. – QtdSync

13. Redo Backup and Recovery ( Windows and Linux )

    

    Redo Backup and Recovery is a simple yet portal backup and recovery tool that backup all your documents and settings, restored them to the exact place where last snapshot was taken. Basically Redo Backup and Recovery is a Live CD, so it doesn’t matter which operating system you have (windows or Linux). – Redo Backup and Recovery

14. Get Backup ( Mac )

    

    Get Backup is a free backup software for Mac that combine the various backup features like disk cloning, scheduling, compressing and also help you to restore the existing backup on any computer without using Get Backup. it also offers tools that automatically sync the files and folder in two different locations, so both of your computer up-to-date always. – Get Backup

15. AceBackup (Windows)

    

    AceBackup is a easy to use, free backup software to create completely secure backups for your data and store them on any local storage device like CD, DVD, Pen Drive or remote FTP server. it provide support for several versions of stored and restored files, So you can store and restore a file in several versions. – AceBackup

it provide basic guidance to student through a fun and immersive process of writing original essays, evaluating peers’ work via rating and comments, also Synthesizing different ideas and language to create your own unique essays.

Using Mixedink you can allow your learners to team up and thus learn from one another contained by MixedInk’s enjoyable, collective setting.

It’s a web-based collaborative writing tool and learning platform that commemorates students’ personal opinions while allowing them to access and combine their fellow classmates’ text writing.

It sharpens the developing new skills on which the students can easily collaborate and learn from each other within MixedInk’s web 2.0 social Environment.

Features of Mixedink

Mixedink has a lot to offer for business and learning purposes. Let us take a look through all its prime features that have proved to be quite useful:

1. Even if students share, edit and mix up different works together to form a new document, the basic idea or work is entitled to the original creator only. Hence, the original writer gets the credit of creating that work. Therefore, Mixedink is supported by authorship tracking facility.
2. In Mixedink students are provided with languages that are used by others while typing and this leads to more and more collaborative creations. Thus, they are constantly provided with real time effective suggestions.
3. Students are given the authority to rate every text that they view incognito, categorizing the top ideas as well as language to be used under Mixedink. Hence, the evaluation process in Mixedink is quite clear and fair.
4. Setting up a new topic in Mixedink is very simple. It hardly takes a few minutes of your time to get started with any new topic of discussion and brainstorming.
5. Mixedink establishes the democratic right of every student by giving them the opportunity to speak out their minds freely.
6. Its fun format and exciting settings attract students to join in large numbers and hence is very popular with students and teachers.
7. Mixedink is made available to everyone through out the day for your convenience. Thus you will never face accessibility issues with Mixedink.
8. You can customize your Mixedink according to your preference i.e. you can choose your topic of discussion based on your liking and disliking.
9. You can get your Mixedink basic version without any charge. There are also the educator and guru versions which will cost you $11 and $28 per month respectively.
10. Thus, Mixedink promotes critical analysis, effective peer assessment, group efforts and collaboration, resourceful risk undertakings and developing bigger and better ideas.

Download : MixedInk

In contrast to online services like Google Docs, dhtmlxSpreadsheet keeps the content from the database table and display it in an Excel style spreadsheet with basic cell formatting, math functions, and keyboard navigation support.

The spreadsheet can be displayed in edit or read-only mode. All changes made in a table (add/edit/delete records) are automatically saved to the database.

dhtmlxSpreadsheet provides built-in export to PDF and Excel, as well as clipboard support.

With a simple installer, it takes a few minutes to get a data table with basic cell formatting, math functions, and keyboard navigation. dhtmlxSpreadsheet is also available as a plugin for WordPress, Joomla!, Drupal, and ModX.

Features of dhtmlxSpreadsheet

1. Easy to share, manage and integrate web based data tables on your website, blog, etc..
2. Simple Database configuration.
3. CMS Integration plugin for Joomla!, WordPress, Drupal, and ModX.
4. Support for Basic Cell formatting
5. Math Formulas
6. Easy to export your Spreadsheet into PDF and Excel format.
7. Intuitive keyboard navigation support
8. Easy to Use and Set Up
9. Familiar spreadsheet interface
10. Offer Script API for Developers
11. offer Unlimited number of sheets per database

Download : dhtmlxSpreadsheet

1. LibreOffice Calc

   

   LibreOffice Calc is a free spreadsheet alternative for Microsoft excel. it’s an spreadsheet component of LibreOffice Productivity Suite. User can easily open and save any spreadsheet in MS excel File Format with LibreOffice Calc. it also allow you to save your spreadsheet as PDF files. it provide support for wide range of other file formats such as CSV, HTML, Open document (ODF), SXC, DBF, DIF etc.. LibreOffice Calc also provide support for multi user editing, So you can do collaborative work on your spreadsheet with your colleagues. – LibreOffice Calc

2. OpenOffice Calc

   

   Calc is a free spreadsheet software and part of free and open source productivity suite – OpenOffice. it’s an perfect free alternative software for Microsoft Excel that allow you to store, organise and analyse numerical information. OpenOffice Calc features is similar to LibreOffice Calc Features. – openoffice Calc

3. Gnumeric

   

   Gnumeric is a free spreadsheet program released under GNU general public license and become part of GNOME office suite. – Gnumeric

4. NeoOffice

   

   NeoOffice is a fully featured office set for Mac OS X. it’s truly a perfect Mac OS X version for OpenOffice.org, Support for Native Mac OS X text highlighting, file locking for local and networked volumes and Native floating tool windows. – NeoOffice

5. EditGrid

   

   EditGrid is a online spreadsheet service that delivered data on demand via live data sources through spreadsheet functions. it’s an online spreadsheet service, so user can easily share, collaborate and publish their data instantly in real time. With EditGrid, user can import/export any spreadsheets from/to many popular spreadsheet file formats, including Microsoft Excel (.xls), OpenDocument (.ods), OpenOffice.org (.sxc), CSV (.csv), and many others. – EditGrid

6. Sheetster

   

   Sheetster is a ad free cloud based open source spreadsheet program that help you to store your documents in any Database, CMS or File system of your choice also provide support for various Excel file format such as XLS, XLSX, MHTML, XML, PDF, CSV and many more. – Sheetster

7. PlanMaker

   

   Planmaker is a powerful spreadsheet program that not only create strong calculation functions but also create impressive charts from the final result. if you are existing Excel user and want to try PlanMaker, you don’t need to learn any special skills to use Planmaker. just install it and continue using all your Excel worksheets with PlanMaker. – PlanMaker

8. SpreadsheetLIVE

   

   SpreadsheetLIVE is a fully featured browser-based, collaborative spreadsheet software that allow you create spreadsheet from scratch and access them from any computer , so user can easily collaborate their spreadsheet with other user in real time. – SpreadsheetLIVE

these database are primarily delivered via a web browser and available in monthly subscription. Here is 8 useful Online Database builder/creators. Some of them are free and open source and some are available commercially.

1. Zoho Creator

   

   Zoho creator is a online database and custom application development tool that allow you to build online database application to manage your business information in the cloud. it has easy to use Drag and drop user interface to create form-driven applications also user can easily import existing Microsoft Access database Application to Zoho creator platform. – Zoho Creator

2. Lazybase

   Lazybase is a online Database app that allow anyone to design, create and share online databases. it give you a secret URL where user can edit their database, so no need to login every time to edit your database. features included easy to embed a live database view into any website, graphs and maps, relationships, import from Excel, RSS feeds, and bookmarklets. – Lazybase

3. Grubba

   

   Grubba is a free online database app to create and manage your own customized personal online database in minutes for Home and Office use. it’s an perfect free alternative for MS Access and Filmmaker Pro and much more easier then any other database apps. – Grubba

4. Myowndb

   

   Myowndb is a web based, multi user, multilingual database application that mainly design to manage your data easily on web. it has easy to use and simple user interface where user can create, modify, delete and search data once you have define the structure. – MyownDB

5. MyTaskHelper (MTH)

   

   MyTaskHelper is a online relational database and web-forms builder to create database. no need to learn any specific programming language or web framework to work with MyTaskHelper. Create, build and customize forms instantly and place a widget code into your forum, blog or webpage. – mytaskhelper

6. Caspio

   

   Caspio Cloud platform allow anyone to create online database, web database application and web forms without writing a single line of code. it has user friendly, intuitive user interface that help you to create powerful online database apps that seamlessly embedded into your own website, intranet and CMS. – Caspio

7. Dabble DB

   

   Dabble DB is a database application that allow user to build multiple database application like charts, maps and calendars from a single database or spreadsheet. it uses a Point-and-Click user interface rather then totally depend on programming.  With Dabble DB User can easily import and export data in a many formats. – Dabble DB

8. eUnifyDB

   

   eUnifyDB is a on-demand online database apps to create your own custom database application for sharing data, capturing workflow and business processes. features included multiple levels of access, security permissions, Match and sort data on specific criteria to get quick view of important business data. – eUnifyDB