# 12 best Onlook alternatives (2026)

> 12 Onlook alternatives on the same UI & Product shelf (2026). Onlook is open source on Desktop / local.

Canonical: https://www.isthereanytool.app/alternatives/onlook

Onlook is filed as open source UI/UX & Product Design software, best for visual React/Next editor. YC W25 OSS darling on design Twitter. All 12 picks sit on our UI/UX & Product Design shelf with overlapping use cases. This page lists 12 neighbors we actually store beside Onlook — not vendor rankings.

## Alternatives

1. [Penpot](https://www.isthereanytool.app/tool/penpot) — Self-hostable Figma alternative; HN favorite
2. [Squig](https://www.isthereanytool.app/tool/squig) — Pablo Stanley gem; napkin-fidelity feedback
3. [OpenDesign](https://www.isthereanytool.app/tool/opendesign) — Framed as the open Claude Design; agent-native UI/UX prototyping without closed Labs lock-in
4. [Reframe](https://www.isthereanytool.app/tool/reframe) — Positioned as OSS alternative to Figma and Claude Design for agent-written UI
5. [Pencil Project](https://www.isthereanytool.app/tool/pencil-project) — Ancient but still used for local/offline wireframes
6. [MapLibre GL JS](https://www.isthereanytool.app/tool/maplibre-gl-js) — Default open vector-map engine in 2026 stacks
7. [Leaflet](https://www.isthereanytool.app/tool/leaflet) — Simplest classic library for tile maps and markers
8. [Protomaps](https://www.isthereanytool.app/tool/protomaps) — Game-changer static global tiles on S3/R2
9. [Lunacy](https://www.isthereanytool.app/tool/lunacy) — LinkedIn/Reddit "underrated Figma alt"; works offline
10. [Relume](https://www.isthereanytool.app/tool/relume) — Agencies' underrated site-architecture tool
11. [Banani](https://www.isthereanytool.app/tool/banani) — Rising AI UI tool; strong Figma/MCP story
12. [Visily](https://www.isthereanytool.app/tool/visily) — PM-friendly; exports Figma/code

[Full Onlook record](https://www.isthereanytool.app/tool/onlook)