| packages/nixpkgs/haskellPackages.synchronous-channels | Synchronous communication channels |
| packages/nixpkgs/haskellPackages.asynchronous-exceptions | Distinguish between synchronous and asynchronous exceptions |
| packages/nixpkgs/heptagon | Compiler for the Heptagon/BZR synchronous programming language |
| packages/nixpkgs/haskellPackages.sync | A fast implementation of synchronous channels with a CML-like API |
| packages/nixpkgs/haskellPackages.clash | CAES Language for Synchronous Hardware (CLaSH) |
| packages/nixpkgs/haskellPackages.clash-vhdl | CAES Language for Synchronous Hardware - VHDL backend |
| packages/nixpkgs/haskellPackages.signals | Synchronous signal processing for DSLs |
| packages/nixpkgs/haskellPackages.kafka-client-sync | Synchronous Kafka Client |
| packages/nixpkgs/haskellPackages.clash-verilog | CAES Language for Synchronous Hardware - Verilog backend |
| packages/nixpkgs/haskellPackages.clash-systemverilog | CAES Language for Synchronous Hardware - SystemVerilog backend |
| packages/nixpkgs/haskellPackages.unexceptionalio | IO without any non-error, synchronous exceptions |