Historically, Lattice offered free yearly licenses for ispLEVER Classic. Around 2020, they transitioned to a (approximately $600–$895 per year) because the cost of maintaining the legacy tools was no longer covered by silicon sales. How to Get the Software Working Today
If you still require a license, here is the current landscape: ispLEVER Classic | FPGA Design Software isplever classic free license
Primarily legacy CPLD families like ispMACH 4000ZE/Z/V, ispMACH 5000, and GAL/ispGAL. isplever classic free license