Free Software for Web
BookStack
BookStack is a free and open-source, self-hosted, easy-to-use platform for documenting, organizing and storing information. BookStack is written in PHP, on-top of the Laravel Framework and can be hosted on most web hosting platforms, VPSs and cloud instances. The software is configurable and allow you to setup BookStack for your particular user case. It allows you to change, the name, logo, theme and registration options. It also provides a page editor with a simple WYSIWYG interface that can be used to edit content by anyone. BookStack is developed as a truly free and open software and is released under the MIT license.
Sketchfab
Sketchfab is a platform that can be used to publish, share or buy and sell 3D, VR and AR content. In the Sketchfab store you find everything from low poly assets to animated rigs & digital scans for your 3D, virtual reality, and augmented reality products. Before making purchasing decisions, Sketchfab allows you to preview real model topology, UVs, and textures so that you can view the real product and make an informed decision.
0x0.st
0x0.st is a file sharing service that utilize CURL for uploading files as an URL to the web. With 0x0.st you can share files from your local machine with "curl -F'file=@yourfile.png' http://0x0.st" or post remove urls with "curl -F'url=http://example.com/image.jpg' http://0x0.st". The max upload size is 512MB and file links are valid for at least 30 days, all the way up to a year depending on download frequency.
Silex
With Silex you can create websites in the cloud that are based on open standards. Silex is a free and open source website builder that provides tools to build websites without writing code. Silex is suitable for professional and hobbyists alike, and is used by freelancers, agencies, hosting companies and more.
The ROM Depot
The ROM Depot is a website that allows you to download and play old console games in the form of ROMs, ISOs and Emulators free. With The ROM Depot you can quickly and easy download ROMs without obstacles such as download wait time, advertisement and survey questions.
Azure DevOps
With Azure DevOps developers can plan smarter, collaborate better, and ship faster with a set of modern dev services. Azure DevOps a set of tools provided as a part of Azure cloud that can be used by developers to collaborate on software projects and do CI/CD integrations.
Matplotlib
Matplotlib is a free and open-source data visualization library for Python. With Matplotlib you can vizualize data in plots, charts, histograms and much more.
CC Search
A search engine dedicated to CC licensed images. With CC Search you can specify and filter by aspect ratio, image size, filte type and license (CC0, BY, BY-SA, BY-NC, BY-ND, BY-NC-SA, BY-NC-ND or Public Domain) to find an image specific to your usecase.
Amazon Associates
The Amazon Associates Program is one of the largest affiliate networks in the world that helps content creators, publishers, and website owners monetize their traffic. With millions of products to choose from on Amazon.com, Amazon Associates use easy link-building tools to direct their readers to products and earn from qualifying purchases.
Hopper
Hopper predicts future prices and help you book flights and hotels at the right time, saving you up to 40%. With 95% accuracy Hopper preditcs prices up to 1 year in advance. In total, Hopper has helped 30 million travelers book trips around the world, saving them more than $1.8 billion to date.