The Best PicaSim Alternatives in 2026

PicaSim simulates flight for radio-controlled aircraft, with gliders and other aircraft types listed among its repository topics.

RCPlanes Online offers a beginner's guide to basic aerodynamics and information for radio-controlled aircraft hobbyists.

eCalc simulates electric drives for radio-controlled models and helps users select motors and components.

My Balsa & Glass Workshop documents scratch-built balsa radio-controlled models and workshop projects.

The OpenRocket wiki provides collaboratively written documentation for the open-source model rocket simulator.

Av8n explains perceptions, procedures and principles of flight through 20 chapters and more than 200 illustrations.

This browser-based circuit simulator displays an animated LRC circuit and uses color to show voltage polarity and ground.

Create and simulate two-dimensional geometric optics scenes with this free, web-based ray optics simulator.

This project documents an amateur-built liquid-fueled rocket engine and flight vehicle, including engine project pages.

RocketPy provides software and information for rocket flight simulation.

Pattern Radio uses AI to explore thousands of hours of humpback whale recordings and help visitors examine acoustic patterns.

This repository contains code for the ThrustCurve.org site, which began as a collection of simulator files based on actual rocket motor firing data.

A curated GitHub list collects free software and hardware for building remote-controlled copters and planes.

RocketPy describes itself as a six-degree-of-freedom trajectory simulator for high-power rocketry.

iNaturalist lets users record plant and animal observations, share them with others and learn about the natural world.

MDCalc provides medical equations, algorithms, and clinical scores across areas such as cardiovascular risk and kidney function.

Converter Pro converts units and includes options to hide and reorder units in its latest version.

Geeky Medics offers free revision resources and OSCE guides for practicing clinical skills.

OpenRocket is model rocket simulation software with a download and information about supported operating systems.

The Wikispecies project lets visitors browse and contribute information about species through its online reference pages.

MathNet lets users browse and search more than 30,000 Olympiad-level problems from 47 countries in 17 languages.

Frink’s web interface accepts Frink expressions for lookup and calculation, with links to documentation, examples, and related tools.

Explore a 3D periodic table in table and atomic views, with element selection opening a Bohr model visualization.

The Catalogue of Life provides a reference list of the world's species.