Marvel is an online design and prototyping platform that runs in a browser, keeping wireframes, clickable prototypes, user testing and developer handoff in one place, with team collaboration alongside. The free plan has no time limit, and paid tiers differ by project count and parallel testing slots.

An editing and design workspace that opens in a tab, split into an Editor line and an Express line, with background removal, generative fill and a deep stack of filters and templates. The free tier asks for no account at all.

A visual collaboration workspace built around a shared infinite canvas, with facilitation tools for timers, voting and a private mode. The free plan allows three boards at once with no limit on members.

An image editor rewritten from scratch in pure Rust: layers, masks and adjustment layers are all there, layered PSD files open directly, and a command line plus an MCP server hand the work to scripts.

Rive puts the playback logic inside the file: a state machine decides what happens on hover, click or drag, and the same lightweight asset runs on web and mobile with no frame by frame handoff.

Files exported from design software are often bloated: editor metadata, comments and redundant path points make up most of the weight. SVGOMG puts the optimiser in a web page, with a toggle for every option and a live size figure.

Choosing colours is where beginners lose the plot: every shade looks fine alone and muddy together. Adobe Color makes it a procedure, with a wheel, harmony rules that generate a five colour theme instantly, extraction from any photo, and a contrast checker for text against background.

Boardmix puts AI generation inside the canvas: one sentence becomes a mind map, a flow chart or a SWOT grid, then the team edits on an infinite board with live cursors, voting and a template library.

tldraw is a whiteboard on an infinite canvas with hand drawn lines and live collaboration, and the same engine is published as an SDK other products can embed.

A presentation tool that puts the whole talk on one zoomable canvas instead of a page sequence: AI drafts the deck from an outline, polls and quizzes run inside it, and a video mode puts the speaker beside the slides.

Coolors turns colour choice into one keystroke: space generates a palette, a lock holds the swatch that works, an image can supply the colours, and a contrast check keeps the result readable.

Coolors is an online palette generator: press space for a harmony, lock the colours you like, take a palette from a photo, check contrast and export in several formats.