Ehgu: An opensource Design Library distributed as DWYW (Do Whatever You Want)
Building blocks like FIFO, Clock Mux, Fractional/Integer Clock Divider, SECDED, Hamming code, etc..
Thee: An opensource Verification Components library (DWYW)
Pre-UVM verification components like clock generator - with/without jitter model
Analog models in SystemVerilog
CDR, Fractional/Integer PLL, ADC - Flash, SAR, Delta Sigma, Pipelined, DAC - R String, R-2R Ladder
Utilities (DWYW)
Scripts for frequently used tasks in TCL/Python
Education
Design, Verification and Utilities are well documented in
https://www.amazon.com/Ehgu-Proposal-efficient-design-ecosystem-ebook/dp/B07TZGPKC8
Open Source older version here
https://github.com/3vm/dsn_verif/blob/master/Ehgu_proposal_full.pdf