Mexanikos

**Design real machines. No math required.** Mexanikos is a mechanism sketchpad on an infinite board. Draw straight links, tie their ends together, and drag the result — a physics solver keeps every connection satisfied, so your mechanism can only move the way it's actually allowed to. **Draw it in seconds** - Tap and drag to draw a link, a wheel, or a whole linkage - Ends that land on existing geometry connect automatically - Add pivots (hinges), welds (rigid corners), sliding joints (pins and pistons), and anchors to pin points to the board - Edit the angle and travel of any sliding joint in the inspector **Drive it** - Add a rotary motor to spin a pivot, or a linear motor to push a slider — a linear motor on a sliding joint becomes a hydraulic cylinder - Motors cycle automatically, reversing at the ends of the slot, and refuse to wind up if the linkage binds - Run the simulation with gravity, or stay in design mode to pose the mechanism by hand **Measure it** - Drop trace markers on any point to record the path it travels — even while dragging by hand - Pick an effort point and a load point to plot mechanical advantage across the full cycle: above 1× the mechanism multiplies force, below it, speed **Save your work** - Your board autosaves as you go and is restored when you return - Keep any number of named boards in the built-in library - Share mechanisms as JSON files **Built for tinkering** - Snap to grid, constraining to 15° angles while drawing - Undo and redo everything, including saved documents - Tune the solver's rigidity for a stiffer or more forgiving feel - Works fully offline — your designs never leave your device No account, no ads, no permissions you don't need. Just an infinite board and your ideas. Mexanikos is perfect for students, makers, and anyone who ever wanted to see a four-bar linkage move before building it for real.