You&#x27;re thinking of Structured ASIC&#x27;s: FPGA-like devices that are configured by via&#x27;s or metal layers. They knock some layers and material issues off the design, lowering costs. They use less power, are faster, and have lower unit costs than FPGA&#x27;s. So, it seems win win. They primarily didn&#x27;t take off because lower-cost tooling and multi-project wafers made low-end ASIC&#x27;s cheaper than before. Still a good option to consider if ramping up volume on a FPGA-proven design. I&#x27;ve always said best thing to do for open-hardware is a matching 45-90nm FPGA and S-ASIC architecture with plenty of pre-proven blocks (esp I&#x2F;O and memory).<p>Anyway, here&#x27;s you a list of some for your own research. eASIC is longest running plus has ability to prototype chips for you without mask costs. That&#x27;s <i>awesome</i>. Triad is extending concept to analog&#x2F;mixed-signal at about $400k a projects last I heard. Others I know nothing about.<p><a href="http:&#x2F;&#x2F;www.easic.com&#x2F;products&#x2F;90-nm-easic-nextreme&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.easic.com&#x2F;products&#x2F;90-nm-easic-nextreme&#x2F;</a><p>Note: They have Nextreme down to 28nm (!!!) plus an ASIC conversion.<p><a href="http:&#x2F;&#x2F;www.triadsemi.com&#x2F;reconfigurable-full-custom-asic&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.triadsemi.com&#x2F;reconfigurable-full-custom-asic&#x2F;</a><p><a href="http:&#x2F;&#x2F;www.gigoptix.com&#x2F;products&#x2F;asics&#x2F;asic-type&#x2F;structured-asic&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.gigoptix.com&#x2F;products&#x2F;asics&#x2F;asic-type&#x2F;structured-...</a><p><a href="http:&#x2F;&#x2F;www.micro-rdc.com&#x2F;Products%20Structured%20ASIC.htm" rel="nofollow">http:&#x2F;&#x2F;www.micro-rdc.com&#x2F;Products%20Structured%20ASIC.htm</a>