Client/Server applications used for sieving, factoring, and primality testing
Software	Source	uses CPU / MT	uses GPU	OS support	Developer	Description	Discussion thread(s)
PRPNet v5.9.0					Mark Rodenkirch	PRPNet is a distributed Client/Server application that can used to manage   and perform probable prime (PRP) tests on a list of candidate numbers.
BOINC v8.x				Win32/64, Linux, MacOS	University of California	Provide your unused computing power available for science.
AutoPrimeNet v1.0.2				Win, Linux, MacOS	Teal Dulcet	Automated assignment handler program for third party GIMPS software,   including Mlucas, GpuOwl, PRPLL, CUDALucas, mfaktc and mfakto.
ECMNET						Network to factorise numbers via ECM. Now powered by BOINC

Sieving Software
Software	Source	uses CPU / MT	uses GPU	OS support	Developer	Description	Discussion thread(s)
mtsieve v.2.6.3     • afsieve / afsievecl     • ccsieve     • cksieve / cksievecl     • gcwsieve / gcwsievecl     • dmdsieve     • fbncsieve     • fkbnsieve     • gfndsieve / gfndsievecl     • k1b2sieve     • kbbsieve     • lifsieve /lifsievecl     • mfsieve / mfsievecl     • pixsieve / pixsievecl     • psieve / psievecl     • sgsieve     • smsieve / smsievecl     • srsieve2 / srsieve2cl     • twinsieve     • xyyxsieve / xyyxsievecl     • hcwsieve / hcwsievecl			OpenCL	Win64, Linux, MacOS	Mark Rodenkirch	• afsieve: find factors of alternating factorials     • ccsieve: sieve for Cunningham Chains     • cksieve: find factors of generalized Carol / Kynea numbers; (bn ± 1)2 - 2     • gcwsieve: find factors of generalized Cullen / Woodall numbers; n • bn ± 1     • dmdsieve: find factors of 2(2p - 1) - 1     • fbncsieve: find factors of k • bn + c with b,n,c are fixed     • fkbnsieve: find factors of k • bn + c with k,b,n are fixed     • gfndsieve: find factors of k • 2n + 1 with k,n are variable     • k1b2sieve: find factors of k • 2n + c with n,c are variable     • kbbsieve: find factors of k • bb ± 1     • lifsieve: find factors of xx ± yy ( Lifchitz numbers )     • mfsieve: find factors of multi-factorials     • pixsieve: find factors of substrings of a decimal string     • psieve: find factors of primorials     • sgsieve: for Sophie-Germain prime searches for k • bn - 1 with b,n are fixed     • smsieve: find factors of Smarandache numbers     • srsieve2: find factors of k • bn + c with b is fixed     • twinsieve: find factors of k • bn ± 1 with b,n are fixed     • xyyxsieve: find factors of xy ± yx ( Leyland numbers )     • hcwsieve: find factors of bn • nb ± 1 ( generalized Hyper-Woodall / Cullen )
srbsieve v1.9				Win32/64	Gary Barnes	Sieve for Sierpinski/Riesel primes to given base b
srbsieve_mthd				Win32/64	Gary Barnes	Sieve for Sierpinski/Riesel primes to given base b
NewPGen v2.82				Win32/64, Linux,   Console Application	Paul Jobling	Sieving software for different types of prime numbers   Support primorial mode.
GFNSvCUDA v.07			CUDA	Win32	Anand Nair	Sieve for Generalized Fermat Numbers (GFN)
tpsieve v0.2.3			CUDA	Win32/64, Linux, MacOS	Geoff Reynolds	Sieving software for twin primes
gfnsieve_ocl			OpenCL	Linux, MacOS	Roman Trunov	Sieve for Generalized Fermat Numbers (GFN)
PCWsieve v23.4.30			OpenCL	Win64, Linux64	B. Little, K. Brazier,   Geoff Reynolds	Sieving software for Proth/Riesel/Cullen/Woodall primes
ppsieve v0.2.3			CUDA	Win32/64, Linux	Ken Brazier	Sieving software for Proth/Riesel primes
srsieve v1.1.4				Win64, Linux, MacOS	Geoff Reynolds	Specialised for a single sequence k • bn + c
sr1sieve v1.4.6				Win64 Linux, MacOS	Geoff Reynolds	Specialised for a single sequence k • bn ± 1
sr2sieve v2.0.0				Win64, Linux, MacOS	Geoff Reynolds	Specialised for a sequence k • bn ± 1 & bn ± k
fsievecl64 v1.0			OpenCL	Win64	Mark Rodenkirch	Sieving software for n! ± 1
fnsievecl64 v1.0			OpenCL	Win64	Mark Rodenkirch	Sieving software for k • bn + c where k,b,n are fixed
APSieve v0.68				Win32/64	Michael Bell, Jim Fougeron	Sieving software for tuples of primes   Support primorial mode
primesieve v12.8				Win32/64, Linux, MacOS	Kim Walisch	Prime ( k-tuplet ) counting software
primecount v7.19				Win64	Kim Walisch	Calculating number of primes to a specific limit
Proth v7.2				Win32/64	Yves Gallot	Sieving software for proth primes
TwinGen v2.2.5				Win32/64	David Underbakke	Sieving software for twins
AthGFN64				Win32/64	David Underbakke,   Yves Gallot, Phil Carmody	Sieving software
prime-gaps-cuda			CUDA	Linux, WSL	Brian Kehrig	A highly optimized GPU-accelerated program for finding large prime gaps.
EMSieve				Win32/64, Linux	Serge Batalov	A sieve/prefactor program for the Eisenstein-Mersenne Primes:   3p ± 3(p + 1)/2 + 1

Factoring Software
Software	Source	uses CPU / MT	uses GPU	OS support	Developer	Description	Discussion thread(s)
YAFU v3.0				Win32/64, Linux, MacOS	Ben Buhrow	Factoring software
GMP-ECM v7.0.5			CUDA	Win32/64, Linux, MacOS	Open source implementation	Factoring software
CUDAPm1 v0.22			CUDA	Win32/64, Linux	?	P-1 Factoring software for Mersenne numbers,   based on CUDALucas
cudaWagstaff v0.03			CUDA	Win32/64	?	Factoring Software for Wagstaff numbers
GGNFS v0.77				Win32/64	?	A Number Field Sieve implementation
Mfactor				Win64	Ernst Mayer	Factoring Software for Mersenne numbers
gfsieve v24.9			OpenCL	Win64, Linux	Yves Gallot	Factoring Software for Fermat numbers
mmff v0.28			CUDA	Win64	George Woltman	Factoring Software for double Mersenne numbers   and small Fermat numbers
MSieve v15.3			CUDA	Win32/64	?	Factoring Software for large integers
mfaktc v0.24			CUDA	Win32/64, Linux	?	Factoring Software for GIMPS - Mersenne numbers
mfakto v0.16			OpenCL	Win64	Bertram Franz	Factoring Software for GIMPS - Mersenne numbers
mfaktp v0.02.1			CUDA	Win64	?	Factoring Software for GIMPS - Mersenne numbers
gvtf			Vulkan	Win64	?	Trial factoring implementation for mersenne primes
CADO-NFS				Linux, MacOS, Win64		Number Field Sieve algorithm for factoring integers
aliqueit v1.13				Win32/64, Linux	Mikael Klasson, Christian Beer	Computing and verifying aliquot sequences