Compare cores
Up to four cores side by side: maturity, license, tests and activity.
| Attribute | Rocket Chip | Ibex | NEORV32 | VexRiscv |
|---|---|---|---|---|
| Maturity | M1 · Prototype | M2 · Simulation-tested | M4 · Production-ready | M2 · Simulation-tested |
| License | No license found | Apache-2.0 · Commercial-friendly | BSD-3-Clause · Commercial-friendly | MIT · Commercial-friendly |
| Language | — | SystemVerilog | VHDL | SpinalHDL/Scala/Verilog |
| Tests | — | yes | yes | yes |
| CI | yes | yes | yes | yes |
| Formal | yes | yes | — | — |
| FuseSoC | — | yes | — | — |
| Activity | updated 25 days ago | updated 1 day ago | updated 3 days ago | updated 10 days ago |
| Boards | — | — | — | — |
| Interfaces | — | — | — | — |
| Category | CPUs and compute | CPUs and compute | CPUs and compute | CPUs and compute |