Google Sheets, part of https://alternativeto.net/software/google-drive/ , is an online spreadsheet app that lets you create and format spreadsheets and simultaneously work with other people. Here&#39;s what you can do with Google Sheets:

• Import and convert Excel, .csv, .txt and .ods formatted data to a Google spreadsheet.
• Export Excel, .csv, .txt and .ods formatted data, as well as PDF and HTML files.
• Use formula editing to perform calculations on your data, and use formatting make it look the way you&#39;d like.
• Chat in real time with others who are editing your spreadsheet.
• Create charts with your data.
• Embed a spreadsheet — or individual sheets of your spreadsheet — on your blog or website.

Google Drive - Sheets

Online

Android

iPhone

Chrome OS

Android Tablet

iPad

Synchronizing, online-based word processor, part of Google Drive.

Coggle is a simple, beautiful, powerful way of structuring information. It&#39;s designed to help you understand things, and then share your knowledge by arranging your document in the same way that your mind works. This way of working is called mind-mapping, and is a very powerful way of learning, storing and sharing information.

Coggle supports: * Real-time Collaboration * Markdown formatting * LaTeX syntax for the inclusion of math expressions (use LaTeX via the \\( \\) or \\[ \\] escape sequences) * Downloaded as vector PDF or as PNG

Other software is ugly, complicated, difficult to use, and often extremely expensive: Coggle is free, simple, beautiful, and it always will be. Coggle is aiming to provide a new tool to the people stuck in the world of conventional documents, lists and spreadsheets, not just to convert the people who already love mind-mapping.

Everyone from business teams sharing information on a project, through students and teachers, to individuals organising their own lives.

Coggle

Coggle is a simple, beautiful, powerful way of structuring information.

Office Online is an online office suite offered by Microsoft, which allows users an easy way to access, view, create and edit documents using lightweight, web browser-based versions of Microsoft Office applications: 

https://alternativeto.net/software/word-online/ ;
https://alternativeto.net/software/excel-online/ ;
https://alternativeto.net/software/powerpoint-online/ ;
https://alternativeto.net/software/onenote-online/ ;
https://alternativeto.net/software/office-sway/ .

The offering also includes https://alternativeto.net/software/outlook-com/ , https://alternativeto.net/software/people/ , https://alternativeto.net/software/windows-live-calendar/ and https://alternativeto.net/software/microsoft-onedrive/ , all of which are accessible from a unified app switcher. The on-premise version of this service called Office Web Apps Server can be installed in private clouds in conjunction with https://alternativeto.net/software/microsoft-sharepoint/ and https://alternativeto.net/software/microsoft-exchange-server/ .

Office Online works great with http://alternativeto.net/software/microsoft-office-365/ .

Office Online

Microsoft Edge

Office Online is an online office suite offered by Microsoft, which allows users an easy way to access, view, create and edit documents using lightweight, web browser-based...

App Inventor for Android is an application originally provided by Google and now maintained by the MIT, Massachusetts Institute of Technology. It allows anyone, including people unfamiliar with computer programming, to create software applications for the Android operating system. It uses a graphical interface, very similar to Scratch and the StarLogo TNG user interface, that allowes users to drag-and-drop visual objects to create an application that can run on the Android system, which runs on many mobile devices.

MIT App Inventor

Block-based, visual coding environment empowering everyone to learn and build mobile apps.

Collabora Office is the enterprise-ready version of the world’s most widely used Open Source office suite – LibreOffice. Backed by a global community of developers, testers, and localization specialists, Collabora Office is built for critical business needs and discerning users by Collabora - the world&#39;s leading LibreOffice services company.

Key features:

• Enterprise hardened through relentless independent testing
• Stable six-monthly release cycle of feature updates
• Backported key features from LibreOffice Vanilla
• Improved OOXML file support (.docx, .docm)
• Enterprise-wide: one Office suite common to your entire environment

Core features:

• One app serving as a complete suite, does the work of six apps
• Includes advanced word processor, spreadsheet, and presentation software
• Reads and writes Microsoft Word, Excel and PowerPoint files (including OOXML)
• More than 80 million users including governments and FTSE 500 companies
• Industry-leading support of Open Document Format, popular in public sector
• Unmatched compatibility with over 100 document and graphic formats supported
• Available in over 50 languages, including 40+ dictionaries
• Visio and Publisher document import and viewing
• Export your documents to PDF

Collabora Office 6.0 combines Collabora’s latest compatibility and document integrity features with a host of improvements from the LibreOffice community. Redesigned toolbars, menus, rulers, and dialogues make these powerful additions more attractive and efficient to use.

other editions: Collabora Online Development Edition  (CODE)

Collabora Office

Windows

Linux

Software as a Service (SaaS)

Cloudron

The enterprise-ready edition of LibreOffice provides you the powerful on-premise office suites, that enable you to access documents, author new content and work collaboratively.

H5P empowers everyone to create, share and reuse interactive content - all you need is a web browser and a web site that supports H5P.

Create richer HTML5 content in existing publishing platforms
Share the content seamlessly across any H5P capable site
Reuse and modify the content in your browser at any time

H5P empowers everyone to create, share and reuse interactive content - all you need is a web browser and a web site that supports H5P.

Open source free community version features : E-mail, Calendar, File sharing, Address book, Tasks, Notes, Newsletters.
PHP based.

Very simple to install and update in Debian 8.x

Group Office

Self-Hosted

Group-Office is an enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients. Easy to use and fully customizable.

Type Studio is a text-based video editor. Instead of editing in the classic video time-line, you simply edit your video by editing the transcribed text.

We started Type because we got frustrated with the way video editing is today! A typical video editing experience is counterintuitive when compared to everything within the modern conventions of UI design and functionality. There are so many buttons, dials, knobs, settings, and keyboard shortcuts to remember, that learning how it all works becomes in and of itself an exercise in patience and resolve. For content-focused video editing, you don’t need most of the features offered by most editing software, and the barrier to entry is very steep — you have to own a machine capable of running these programs and know-how all of the functions work.

Type Studio

Type Studio is a new and easy way to edit your video by just editing text. You can edit a video without having any video editing skills. The only thing you have to do is edit the transcribed text document and we do all the heavy lifting for you.

Apps with 'Online Editing' feature