Cubbbix
500+ free online tools for everyone. No sign-ups, no catch
4 followers
500+ free online tools for everyone. No sign-ups, no catch
4 followers
Cubbbix is a collection of 500+ free online tools that run in your browser. No sign-ups, no accounts.
Inside: calculators and converters, image and PDF tools, text tools like a word counter, developer and SEO tools including an AI Agent Readiness Checker and an llms.txt Validator, plus CEFR language quizzes in 8+ languages with optional verifiable certificates.
Most tools process everything locally in your browser. Funded by ads and donations, not by selling data.
Free
Launch Team / Built With
Render Sandboxes: a computer for every agentRun untrusted code safely. Idle sandboxes cost nothing
Promoted
Update from the maker: Cubbbix has grown a lot since this launch. New this month: a set of developer tools for the AI-search era, including an AI Agent Readiness Checker (can AI crawlers actually read your site?) and an llms.txt Validator & Generator. The language quizzes now issue verifiable certificates in 8+ languages. The rules have not changed: free, no sign-ups, and most tools run entirely in your browser. Feedback very welcome.