Sigasi Visual HDL vs VHDL-LS

Fri, 28 Aug 2026 00:00:00 +0000

Sometimes we get the question: Why pay for Sigasi? Adding the claim: VHDL-LS does “the same” for free

TL;DR

We wanted to factcheck that claim, did a full investigation and one of our hardware engineers made a comparison feature by feature on the differences between Sigasi Visual HDL and VHDL-LS. This comparison was made based on publicly available documentation, VHDL-LS version 0.7.0 (4/28/2024), our friends at ChatGPT, Gemini, Claude, Perplexity,… and user feedback. It becomes quickly clear that VHDL-LS does not match the capabilities and features of Sigasi Visual HDL and that the claim “it does the same” is false.

VHDL-LS on Sigasi

Sigasi Visual HDL vs VHDL-LS

TL;DR