eRISC (short for Embedded RISC) is a novel royalty-free 16-bit Instruction Set Architecture (ISA) that is set for catering to small-scale embedded applications. eRISC is a complete ISA with almost all the instructions that are found in industry-standard ISAs. eRISC is designed to have high code density and modular architecture.

Charon, the eRISC-V ISA Simulator, simulates a functional model of an eRISC processor at the software level. It is written entirely in C++ hence achieving a very fast simulation rate. Charon has the ability to dump its simulation results onto the console as well as into a log file. It uses the Pluto disassembler for run-time instruction disassembly.

eRISC Assembler is a tool to convert the code written in eRISC assembly language to ELF executable files. It is a two-pass assembler that is written entirely in C++.