Take free Harvard online courses through Harvard Extension School's Open Learning Initiative. Course videos feature Harvard faculty.
ScholArxiv is an open-source aesthetic and minimal app that allows users to search, read, bookmark, share, download and view summaries of academic papers from the arXiv repository.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Android
- Android Tablet


+4
IFDB is a Wiki-style community project: members can add new game listings, write reviews, exchange game recommendations, and more.


+1
Microsoft Encarta was a digital multimedia encyclopedia published by Microsoft Corporation from 1993 until 2009. As of 2008, the complete English version, Encarta Premium consisted of more than 62,000 articles, numerous photos and illustrations, music clips, videos...


+1
Artha is a handy thesaurus based on WordNet with distinct features like global hotkey look-up, passive desktop notifications, regular expression based search, etc.. Artha may be used as a free open-source replacement to the proprietary WordWeb Pro.


+2
Maple is a general-purpose commercial computer algebra system. Users can enter mathematics in traditional mathematical notation. Custom user interfaces can also be created. There is support for numeric computations, to arbitrary precision, as well as symbolic computation and...
Cost / License
- Paid
- Proprietary
Platforms
- Mac
- Windows
- Linux

Uncyclopedia is the content-free encyclopedia that anyone can edit. It parodies Wikipedia.
You no longer have to worry about choosing the right i18n library, editor, or platform. Tolgee is the only tool you need to translate your web-based project to any language you wish.
Cost / License
- Freemium
- Open Source (Apache-2.0)
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)


+1
Enhance language skills with flashcards, video courses, and an integrated translator, offering a comprehensive approach to vocabulary building.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Google Chrome


+2
Academic Earth offers free access to video courses and academic lectures from leading colleges and universities.

Professional typing tutor providing adaptive exercises, real-time feedback, touch-typing lessons, weak spot analysis, and detailed progress tracking.


CourseFinder helps you find the course that’s right for you. Whether you're looking for a job, changing careers or just looking for a course to develop your hobby, CourseFinder is the perfect place to start.

Learn Spanish, French, German, Russian, and English with Lingvist – a hyper-efficient vocabulary builder that uses AI to improve your memory.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad


+3
Techlore is a small team educating people about digital rights, privacy, security, digital control, and other important topics to push the world towards a safer internet. Techlore envisions a world where technology works for us, not against us—and wants to prove to people that...
Cost / License
- Free
- Open Source
Platforms
- Online
A magical collection of interactive music theory tools & visual reference pages for musicians and music producers.

Project-based online platform offering in-browser coding, real data exercises, portfolio-building, and hands-on learning for data analysis, science, and engineering roles.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online

An alternative mobile client for Untis Timetable, adding features such as filtering out certain classes.


+2
Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a powerful, integrated and easy to use suite of tools for professional PCB Design.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Windows




Hanon Pro is an app for iPhone, iPad, and Mac that offers a fresh, modern take on keyboard and piano technique and exercises for the digital age.


+9
A web-based solution for sharing know-how: work instructions, procedures, knowledge base, product support, enterprise wiki.
Cost / License
- Paid
- Proprietary
Platforms
- Online
- Self-Hosted



Connects scientists to share papers, datasets, and findings, discover global research, track publications, and engage in scholarly discussion within a scientific network.
Cost / License
- Free
- Proprietary
Platforms
- Online
- iPhone


+2
Open-source calculator app based on Windows Calculator, available for desktop, mobile, and web. Supports scientific, unit conversion, and programming functions.
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Mac
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Flathub


+1
Vocabulary.com is the easiest, most intelligent way to improve your vocabulary. It combines an adaptive learning system (The Challenge) with the world’s fastest dictionary (The Dictionary) so that you can more quickly and more efficiently learn words.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- iPhone
- iPad


+3
Schematic capture, Ngspice based simulation, PCB layout, custom PCB manufacturing, for electronic engineers, educators, students and hobbyists.
Cost / License
- Free
- Proprietary
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Flathub
- Flatpak


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