Kinetra2D vs LoongBones

Kinetra2D is a web-based workspace for rigging artwork, animating 2D scenes and exporting projects for PixiJS. Users can build bone hierarchies, pose characters, edit meshes and control attachment vertices. Animation tools include keyframes, easing, playback, clips and a dedicated timeline. AI animation generation can supply motion starting points for further manual refinement. PixiJS is the only supported export engine; a downloadable ZIP can include skeleton JSON, atlas PNG and JSON files, and sounds for a scene or project. Scenes can be organized in a cloud workspace, with capacity depending on the plan. The Free plan includes three projects per workspace and one scene per project, with community support. Pro costs $12 a month, billed monthly, and includes 50 projects per workspace, 10 scenes per project and up to 50 cloud projects. Team costs $20 a month, billed monthly, with a two-seat minimum; Studio costs $32 a month, billed monthly. Paid tiers start with a no-charge 14-day trial that requires no payment method. Locally saved Animator projects stay in the browser unless users send project data to an account feature.

LoongBones is a 2D skeletal animation solution with an online editor and a runtime player. The browser-based editor uses HTML5 and canvas, so it requires no installation, and it can create, modify, and export animation data, images, frame sequences, and other digital assets. Its tools include mesh deformation, bone binding, inverse kinematics, collision, and mesh curve deformation. Imports include PSD files, images, texture atlases, LoongBones projects and data, and supported Spine files. Exports include animation formats, images, sprite sheets, and GIFs, with plugins for additional formats. The runtime plays LoongBones animation data and supports Egret, Cocos, PixiJS, Unity, and Unreal; it is described as open source, free to download, and MIT-licensed. The product also says it supports AI-generated animation and has integrated DeepSeek. A seven-day free experience includes 100M storage and up to 10 projects. Membership costs 19.90 CNY a month or 199.90 CNY a year. The listed platforms include Android, iOS, Linux, macOS, self-hosted, web, and Windows.