Library of great software, which i have personally tried and actively use.
Windows maintenance tools
Bulk Crap Uninstaller - Fantastic tool for bulk app uninstallation. It is open source and doesn't have to be installed.
EMCO Ping Monitor - Great tool for monitoring internet connection latency. Free version allows to monitor up 5 machines , which is ideal for monitoring your router, DNS gateway and the availability of public google.com addresses. Thus it collects information about internet outages in clear graphs.
BleachBit - Open source tool for cleaning Windows of redundant files
Everything< /a> - Flash scan find any file on all computer disks. Any search tool can't match this.
Nástroje pro webdesign
Saola Animate - brilliant tool for animating HTML5 elements
Glyphter - tool for creating custom icon fonts
AutoPrefixer - prefixer pro cross browser CSS
Piskel - online sprite editor
Gravit - online editor for fast retyping
Adobe XD - prototyping tool from Adobe
Re:view - brilliant extension for Chrome for testing responsiveness
Free Online OCR - when you need to convert a bit image with text to text
dbdiagram.io - great, fast and easy tool for developing database diagrams
HTML & CSS
Learn CSS grid - CSS grid clearly a visually
ScrollOut - detection of visible elements while scrolling
Splitting - library for separating words or letters
Other
Optimization
WebPageTest - web speed test / request loading optimization
GiftOfSpeed - web analysis and optimization recommendations
API
Mockoon - free and open-source fake API simulator