PFASST is a time-parallel expansion of spectral deferred corrections methods.
Parareal is one of the most widely studied time-parallel methods.
Multigrid Reduction in Time algorithm developed at the LLNL
STMG is a time-parallel method for parabolic PDEs.
WRMG is normally only a space-concurrent method; time parallelism is possible using cyclic reduction.
The parallel implicit time-integrator.