I put this list together for people who are tired of paying for subscriptions when a free tool already does the job well.
A few are worth bookmarking on their own.
@arXiv and @DBLP are obvious choices if you work anywhere near research, engineering, or computer science.
@Excalidraw and @draw.io are still two of the easiest ways to create architecture and system diagrams without needing another paid license.
Pwned Passwords, from @Have I Been Pwned, is one of the more useful security tools on the list. It can check whether a password appears in known breach data using a partial-hash approach, without sending the password itself.
@Hoppscotch is a lightweight API testing tool without the complexity that has grown around some larger platforms.
And @DevDocs brings hundreds of API references into one fast, searchable interface, with offline support as well.
There is one important caution.
Some of the tools in the list process your file, text, or data on someone else's server rather than entirely in your browser. That may be fine for public or non-sensitive material, but I would not use those tools for confidential documents, client information, source code under an NDA, credentials, or regulated data.
The full list calls out where that distinction matters.
https://www.linkedin.com/pulse/108-free-websites-every-ai-practitioner-should-have-bookmarked-tiru-n-qxsce
💬 Which one free tool saves you the most time in your day-to-day work?
