Compare cores
Up to four cores side by side: maturity, license, tests and activity.
| Attribute | ZipCPU | VexiiRiscv | Ibex | NEORV32 |
|---|---|---|---|---|
| Maturity | M2 · Simulation-tested | M2 · Simulation-tested | M2 · Simulation-tested | M4 · Production-ready |
| License | No license found | MIT · Commercial-friendly | Apache-2.0 · Commercial-friendly | BSD-3-Clause · Commercial-friendly |
| Language | Verilog | SpinalHDL (Scala) | SystemVerilog | VHDL |
| Tests | yes | yes | yes | yes |
| CI | — | yes | yes | yes |
| Formal | yes | — | yes | — |
| FuseSoC | — | — | yes | — |
| Activity | updated 21 days ago | updated 1 day ago | updated 1 day ago | updated 3 days ago |
| Boards | — | — | — | — |
| Interfaces | Wishbone | AXI4, Wishbone, Tilelink, AXI4, Wishbone, Tilelink | — | — |
| Category | CPUs and compute | CPUs and compute | CPUs and compute | CPUs and compute |