Spline is a browser-based 3D design tool for building interactive scenes for the web.. The tools below share its categories (Developer Tools, Productivity). Most are still pre-launch, so you are comparing direction and early access rather than finished feature lists.
Ledge
LaunchedMarkdown notes that run shell commands, code, SQL and AI prompts in place.
M3e Canvas
LaunchedSketch Material 3 Expressive screens in the browser and turn them into vibe-coding prompts.
PCBJam
BetaKiCad in the browser, with real-time collaboration on the same project.
Raycast
LaunchedA keyboard launcher for Mac that replaces Spotlight with extensions, snippets and window management.
aclif
LaunchedA framework for building command-line tools that AI agents use to reach SaaS platforms.
Biome
LaunchedA fast formatter and linter for JavaScript, TypeScript, JSON and CSS in one tool.
boxes.dev
LaunchedCloud computers for coding agents such as Claude Code and Codex, managed from desktop, phone or terminal.
Bun
LaunchedA fast JavaScript runtime, bundler, test runner and package manager in one binary.
Butter
LaunchedA video editor where creatives build and remix custom design tools right on the timeline.
Command Center
LaunchedAn agentic coding environment for running AI agents in parallel and reviewing their edits.
Copperhead
LaunchedAn open-source AI engineering platform for designing, verifying and shipping circuit boards.
Cursor
LaunchedAn AI code editor built on VS Code, with codebase-aware chat, edits and agents.
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