Listings

All free open source tools

https://free-for.dev/#/?id=cicd

All discord communities for programming

https://github.com/mhxion/awesome-discord-servers/

Services

HaveIBeenPwned

Check if you have an account that has been compromised in a data breach.
https://haveibeenpwned.com/

JustDelete

A directory of direct links to delete your account from web services.
https://backgroundchecks.org/justdeleteme/

Free Oracle certifications

https://www.oracle.com/corporate/blog/free-certifications-oracle-oci-autonomous-033020.html

Viewen

Free webhosting: (Life Time)
https://dashboard.viewen.com/aff.php?aff=4167

Interviewing.io

Get ready for a job interview by a volunteer professional from one of the FANG companies! Get better at system design and problem solving, maybe even find a job
https://interviewing.io/

Tools

Regex 101

A website that gives a 100% defined explanation of the expression you provided. Explains what it does and how does it work.
https://regex101.com/

Regexr

An alternative to the above, does a similar job, just slightly differently.
https://regexr.com/

Kenney

A collection of assets free to use to your project.
https://www.kenney.nl/assets

Syncfysion

A collection of 1.6k+ controls used across different UI frameworks.
https://www.syncfusion.com/products/communitylicense

Sonarsource

A list of the most popular languages with most of the issues and tips by category.
https://rules.sonarsource.com/csharp

CyberChef

The best utility tool I have found which does cool stuff like jwt decoding, encoding, token signing, hex, binary and other conversions, converting dates, hashing, etc…
https://gchq.github.io/CyberChef/

Extensions to VS

Codemaid

An open source Visual Studio extension to cleanup and simplify C#, C++, F#, VB, PHP, PowerShell, R, JSON, XAML, XML, ASP, HTML, CSS, LESS, SCSS, JavaScript and TypeScript coding.
http://www.codemaid.net/