# 12 best Squig alternatives (2026)

> 12 Squig alternatives on the same UI & Product shelf (2026). Squig is open source on Figma plugin / local.

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

Squig is filed as open source UI/UX & Product Design software, best for squiggle diagram plugin. Pablo Stanley gem; napkin-fidelity feedback. All 12 picks sit on our UI/UX & Product Design shelf with overlapping use cases. This page lists 12 neighbors we actually store beside Squig — not vendor rankings.

## Alternatives

1. [Penpot](https://www.isthereanytool.app/tool/penpot) — Self-hostable Figma alternative; HN favorite
2. [OpenDesign](https://www.isthereanytool.app/tool/opendesign) — Framed as the open Claude Design; agent-native UI/UX prototyping without closed Labs lock-in
3. [Reframe](https://www.isthereanytool.app/tool/reframe) — Positioned as OSS alternative to Figma and Claude Design for agent-written UI
4. [Pencil Project](https://www.isthereanytool.app/tool/pencil-project) — Ancient but still used for local/offline wireframes
5. [MapLibre GL JS](https://www.isthereanytool.app/tool/maplibre-gl-js) — Default open vector-map engine in 2026 stacks
6. [Leaflet](https://www.isthereanytool.app/tool/leaflet) — Simplest classic library for tile maps and markers
7. [Protomaps](https://www.isthereanytool.app/tool/protomaps) — Game-changer static global tiles on S3/R2
8. [OpenLayers](https://www.isthereanytool.app/tool/openlayers) — Gov/enterprise choice when Leaflet is too small
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 Squig record](https://www.isthereanytool.app/tool/squig)