Loading…
Skip to content25 live studios · 574 tools+
Tentaco bundles 574+ free online tools into focused studios. Most processing happens locally in your browser — no sign-up required.
Optional — helps keep Tentaco free for everyone.
Six reasons teams and individuals choose Tentaco over cloud upload tools.
PDF, image, video, HTML, code, text, audio, data, design, SEO, security, calculator, finance, API, converter, letter, document, map/geo, 3D/CAD and automation workspaces.
JWT inspector, OpenAPI viewer, DNS lookup, SSL certificate viewer, CORS tester, email validator and more — server routes are clearly marked.
Most tools never upload your files. Optional server features (file share, DNS/SSL lookup, HTTP proxy, cloud image AI) are clearly marked per tool.
Full UI in 17 locales with hreflang URLs. Letter and document templates follow DIN 5008 and German business conventions where it matters.
Optional encrypted sync for favourites, presets and recent tools across your devices — local vault with recovery key, no mandatory account.
Floating assistant routes questions to the right studio locally. Optional Ollama or OpenAI enrichment — off until you enable it in settings.
Browser studios vs. traditional desktop apps vs. typical cloud upload tools.
| Feature | Tentaco | Desktop app | Cloud upload |
|---|---|---|---|
| Requires upload | |||
| Account required | |||
| Free to use | |||
| Local-first privacy | |||
| Works offline | |||
| Install required |
Cloud tools vary by vendor. Tentaco marks server-dependent features clearly in each tool.
Jump straight to the right area — the same local-first experience everywhere.
Studios hub
Browse workspaces, categories and all tools in one place.
OpenWorkflows
Multi-step presets in Automation Studio — PDF invoice, format JSON, image to PDF and more.
OpenDevice sync
Optional encrypted backup for favorites and presets across devices.
OpenBrowser extension
Open the right studio from any page — handoff without copy-paste.
OpenDocumentation
Shortcuts, privacy model, assistant API and bookmarklet.
OpenPrivacy tools
Filter the catalog for local-first tools and compare privacy tiers.
OpenSome newer tools have documented constraints — we prefer honest limits over fake promises.
Studios, categories and every tool on one page — search, filter and open a workspace in one click.