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GC Golf Club Loft Gap Checker Check loft gaps across your golf clubs Utilities•Free ▲0

C CoinUFO Discover new Solana tokens and inspect permissions, holder concentration and liquidity risk signals. Business & Finance•Free ▲0

Q Quirkle A minimalist flashcard app for studying with spaced repetition, without the clutter. •Free starter access + paid upgrade ▲0

D DoseCalcs Free browser-based medication dosage calculator with step-by-step arithmetic and unit conversions. Research & Education•Free ▲0

C CompatiTest Free, non-clinical couples compatibility reflection test built around eight everyday scenarios. Research & Education•Free ▲0

S SeoLoupe Find the SEO, AEO and technical issues holding your website back — and see what to fix first. Marketing & SEO•Free scan + paid plans ▲0

SpeakerEject Free browser speaker cleaner and audio tests Video & Audio•Free ▲0

B Bizonylat NAV-compatible online invoicing software for Hungarian businesses Business & Finance•Free ▲0

VS Video Size Reducer Compress videos online before sharing or uploading with a fast, free-to-start workflow. Video & Audio•Free ▲0

NS NotPanel SMM Price Index Free browser for one vendor’s SMM catalog prices, aggregates and CSV/JSON downloads. Research & Education•Free ▲0

T Toolk Browser-based tools for PDFs, images, text, calculations and code Utilities•Free ▲0

WF Whizki Family Learning Planner Adult-managed homeschool planning and learning records, with a free one-learner plan. Research & Education•Free / paid plans ▲0

B BoundHive AI-assisted book planning and publishing workspace with free KDP calculators. AI & Writing•Free / paid plans ▲0

Y Yapıdan Free Turkish civil-engineering learning resources and browser-based educational calculators. Research & Education•Free ▲0

O OmniLab Explore supported chemistry reactions before the lab. Research & Education•Free ▲0

S SpriteFrame Create sprite sheets from PNG frames or MP4 clips, with optional AI character animation. Design & Creative•Free / paid plans ▲0

P ProstoPolicz Free Polish online calculators for grade averages, percentages and everyday maths. Utilities•Free ▲0

E( Elefunc (RTCode.io) Live web coding with AI-agent collaboration, edge deployment, and built-in auth. Developer Tools•Contact for pricing ▲0

IT Image to ASCII Turn images into ASCII art locally in your browser. Design & Creative•Free ▲0

Q QFXtoQBO Convert QFX, OFX and CSV files into QuickBooks QBO files locally in your browser. Business & Finance•Free / paid plans ▲0

D DrawingIdeas.net Free drawing subjects, illustrated tutorials and a random sketchbook prompt generator. Design & Creative•Free ▲0

R RedirectBrief Review migration redirects, prioritize exceptions and export a client handoff brief. Marketing & SEO•Free ▲0

P PrepSound Free browser-based tone generators, noise tools and audio tests Video & Audio•Free ▲0

BaZi Calculator Free Four Pillars charts with Day Master, Five Elements and Ten Gods Utilities•Free ▲0