Open-Source-Klone kommerzieller Software

Covers triggers, 400+ app integrations and multi-step flows, and adds self-hosting plus AI nodes Zapier lacks.

Explosive 2025-26 growth; figure uncertain.

Nails hand-drawn whiteboarding and real-time collab but lacks Miro's templates, app ecosystem and enterprise admin.

MIT.

Matches mobile backup, ML face/object search and sharing; trails Google's cloud scale and editing.

AGPL; still climbing fast.

Rich split/merge/OCR/sign/convert toolkit, but weaker on precise WYSIWYG content editing and e-sign workflows.

Grew very quickly.

Strong REST/GraphQL/WebSocket client with collections and collab; lighter on enterprise governance and mocking depth.

MIT.

Superb time-series/observability dashboards, but BI-style ad-hoc modeling and self-serve exploration are secondary.

AGPL since 2021.

Broad SQL-native charting, dashboards and governance; no native desktop authoring or Tableau-grade visual polish.

Apache-2.0.

Docs, boards and databases offline-first, but automations, integrations and polish lag Notion.

AGPL.

Unifies docs, whiteboard and database (edgeless canvas Notion lacks), but sync/collab maturity trails.

CAVEAT: source-available-leaning custom license, not clean OSI.

Turns SQL DBs into spreadsheet/grid/kanban UIs with API; thinner on Airtable's automations and marketplace.

AGPL.

Covers nearly all general diagramming with huge shape libraries; lacks deep Office/data-linked Visio features.

Apache-2.0; stars shown are the desktop repo.

Real UI design, prototyping and dev handoff with open standards; smaller plugin ecosystem and some perf gaps.

MPL-2.0; figure uncertain.

Notebooks, web clipper, sync and E2E encryption; weaker OCR/business features than Evernote.

AGPL/MIT; count estimated.

Excellent infinite-canvas SDK and whiteboard, but a toolkit more than a full Miro collaboration suite.

CAVEAT: custom source-available tldraw license.

Issues, cycles, modules and roadmaps cover core agile PM; less mature on enterprise workflow/automation.

AGPL.

Easy self-serve questions, dashboards and embedding; lighter on advanced modeling/calculated visual analytics.

AGPL (open-source edition).

Channels, DMs, threads, calls and integrations plus omnichannel; UX/app ecosystem a notch below Slack.

MIT.

Git-friendly offline API client with local collections; lacks Postman's cloud sync, monitors and team cloud.

MIT (core).

Scheduling, availability, routing, team events and integrations rival Calendly and add self-hosting/API.

AGPL.

AI-tagged, searchable self-hosted library; weaker mobile apps and sharing than Google Photos.

AGPL.

Privacy-first, cookieless pageview/event analytics; intentionally far simpler than GA4's funnels and segments.

MIT.

Enterprise-grade messaging, integrations, playbooks and compliance; smaller third-party app directory.

MIT/AGPL mix.

File sync/share plus an app platform (calendar, docs) exceeding Dropbox's scope; sync polish varies.

AGPL.

Full parametric 3D/assembly/FEM breadth, but robustness, UX and workflow polish trail commercial MCAD.

LGPL; 1.0 release drove growth.

Solid WebRTC meetings, screen share and recording; lacks Zoom's webinars/large-scale polish and ecosystem.

Apache-2.0; figure uncertain.

Strong offline vault, browser integration and TOTP; no built-in cloud sync or team sharing.

GPL.

Lightweight privacy analytics with goals and funnels; deliberately omits GA's deep segmentation/ad tie-ins.

AGPL.

Fast self-hosted list management, templating and campaigns; no automations/CRM/marketing suite depth.

AGPL.

Streams your own library with great clients/Subsonic API, but no catalog, discovery or social features.

GPL.

No-code flows with growing piece library and AI; fewer connectors than Zapier/n8n.

MIT (core).

Powerful flow-based wiring (esp. IoT) via nodes; more developer tool than Zapier's SaaS-connector focus.

Apache-2.0.

Tasks, time-tracking and pomodoro with integrations; weaker collaboration and mobile vs Todoist.

MIT.

Faithful kanban with swimlanes, checklists and WIP limits; dated UI and fewer power-ups.

MIT.

Closest GA replacement: sessions, goals, funnels, heatmaps, e-commerce and tag manager.

GPL; count uncertain.

Full vault, sync, sharing, org/team management and passkeys across platforms.

AGPL/GPL (server); clients in bitwarden/clients.

Real-time collaborative text editing, but plain-ish docs — no sheets/slides or rich Docs formatting depth.

Apache-2.0.

Fast reliable file sync/share with client-side encryption; smaller app ecosystem than Dropbox/Nextcloud.

AGPL (community edition).

Strong multitrack recording/editing and effects; less polished than Audition for broadcast/restoration mastering.

GPL; count estimated.

Capable cross-platform NLE with wide format support; lacks Premiere's ecosystem, color and team workflows.

GPL.

Non-destructive RAW development plus cataloging rivals Lightroom; no cloud/mobile ecosystem.

GPL.

Surveys/forms with logic and in-app targeting; fewer design/templating niceties than Typeform.

AGPL.

Document fields, signing and audit trail cover core e-sign; lighter on enterprise compliance/integrations.

AGPL; count estimated.

Gantt, work packages, agile boards and budgets span PM and project-scheduling; heavier to run.

GPL (community edition).

Full marketing automation (campaigns, segments, lead scoring, landing pages) beyond simple email.

GPL.

Outstanding digital painting with brushes/animation; limited photo-retouch, prepress and plugin breadth.

GPL; GitHub is a KDE mirror.

Node-based NLE/compositor still early/alpha; far short of AE's motion-graphics depth.

GPL; semi-dormant (last major commit ~2024).

Local-first, encrypted objects/graph workspace; sync model and feature breadth still maturing.

CAVEAT: source-available 'Any Source Available License', not OSI-approved.

End-to-end encrypted docs, sheets, slides and forms collaboration; smaller feature set and scale than Workspace.

AGPL.

Best-in-class OOXML fidelity for Word/Excel/PowerPoint plus live co-editing; some advanced features lag.

AGPL; server component, star count understates reach.

Strong raster editing/retouch; weaker non-destructive workflow, CMYK/prepress and plugin ecosystem (3.0 improved it).

GPL; primary dev on GNOME GitLab.

Broad Writer/Calc/Impress parity and a huge feature set; imperfect OOXML fidelity and no native real-time co-edit.

MPL; GitHub is a read-only mirror.

Strong node-based compositing (OpenFX), but no motion-graphics/templating or AE-style timeline mograph.

GPL; count estimated.

Capable SVG vector editor with strong path tools; weaker typography, CMYK/prepress and large-file performance.

GPL; primary dev on GitLab.

Modeling, sculpt, animation, sim and render match or exceed the commercial DCCs for most work.

GPL; GitHub is only a mirror — stars hugely understate it.

Real DTP with CMYK, color management and PDF/X export; weaker typography and shaky IDML interop.

GPL; GitHub mirror.

Excellent RAW demosaic/development engine, but minimal cataloging/DAM and no cloud.

GPL; count estimated.

Node-based procedural PBR material authoring; smaller node/library set than Substance Designer.

MIT; count estimated.

Capable 2D drafting with DXF/DWG and scripting; 2D-only and a smaller toolset than AutoCAD.

GPL (community edition); count estimated.

Browser-based LibreOffice with live co-editing and high OOXML fidelity; needs server infra to run.

MPL; count estimated.

GPU 3D PBR texture painting; smaller feature set and ecosystem than Substance Painter.

CAVEAT: source available but binaries sold.

No-code grid/kanban databases with API and automations; fewer apps/integrations than Airtable.

MIT/AGPL mix; primary dev on GitLab.

Strong mail/calendar/contacts; weaker native Exchange/enterprise integration than Outlook.

MPL; desktop source in Mozilla's own repos.

Professional DAW: multitrack recording, editing, mixing, automation and plugins rival Pro Tools.

GPL; GitHub is a mirror — stars hugely understate adoption.