Collimator vs Penbook
A side-by-side look at Collimator and Penbook. For an in-depth review of either product, follow the links below.
Collimator
Science & Engineering
A collimator is a device that narrows a beam of particles or waves. It can be used to align beams or filter out unwanted particles.
opticsphysicsalignmentfiltering
Penbook
Office & Productivity
Penbook is a free and open-source note taking app designed for handwritten notes. It allows users to write notes naturally with a stylus, with features like pressure sensitivity, palm rejection, and customizable pens and paper. Useful for taking quick handwritten notes on a tablet.
handwritingstylusnotesopen-source
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