Defense and hardening
Tools that harden systems and block intrusions
1–100 of 371
ImpactToolCategoryStarsUpdated
Reaches othersAdGuard Homeadguardteam/adguardhomeA self-hosted DNS server that blocks DNS lookups for ads, trackers, and dangerous domains across a whole home or small-office network.Defense and hardening / Networkstars37,6852026-10-23Local onlyAutheliaauthelia/autheliaAn authentication server that works with your reverse proxy to put a login portal and multi-factor authentication in front of your own web apps. It also provides single sign-on and OpenID Connect.Defense and hardening / AppSec and DevSecOpsstars29,4012026-10-25Local onlyInfisicalinfisical/infisicalA secrets management platform that keeps API keys and passwords in one place and hands them to apps and CI at runtime. Use Infisical Cloud or run it yourself.Defense and hardening / AppSec and DevSecOpsstars29,9812026-10-25Reaches othersJumpServerjumpserver/jumpserverAn open-source bastion host (privileged access management, PAM) that funnels operators' access to servers and databases through one place and records who did what and when.Defense and hardeningstars31,8322026-10-23Local onlyKeycloakkeycloak/keycloakA self-hosted identity and access management server that handles login for your apps, with single sign-on, multi-factor authentication, identity brokering, and user management.Defense and hardening / AppSec and DevSecOpsstars37,5052026-10-25Local onlyosqueryosquery/osqueryA tool that lets you query the state of an operating system, such as running processes, listening ports, users, and startup items, with SQL.Defense and hardening / Incident responsestars23,6742026-10-23Reaches othersSafeLinechaitin/safelineA self-hosted, reverse-proxy WAF that sits in front of your own web app, inspects incoming HTTP requests, and blocks attacks. You install it on your own Linux server with Docker.Defense and hardening / Web securitystars22,9482026-10-22Reaches othersSniffnetgyulyvgc/sniffnetA desktop app that lists your computer's network traffic by remote country, domain, and program. It does not show packet contents.Network / Defense and hardeningstars41,6912026-10-21Local onlyuBlock Origingorhill/ublockA browser extension that uses filter lists to block ads, trackers, and malware sites inside your browser.Defense and hardeningstars68,8212026-10-24Not ratedfrpfatedier/frpReview coming soon (opens GitHub in a new tab)Web security / Defense and hardeningstars110,1022026-10-23Not ratednpsehang-io/npsReview coming soon (opens GitHub in a new tab)Reconnaissance / Network / Defense and hardeningstars34,2562024-05-30Not ratedhow-to-secure-a-linux-serverimthenachoman/how-to-secure-a-linux-serverReview coming soon (opens GitHub in a new tab)Defense and hardeningstars31,8362026-09-07Not ratedhostsstevenblack/hostsReview coming soon (opens GitHub in a new tab)Defense and hardeningstars31,2982026-10-20Not ratedauthentikgoauthentik/authentikReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars26,0762026-10-23Not ratedmacos-security-and-privacy-guidedrduh/macos-security-and-privacy-guideReview coming soon (opens GitHub in a new tab)Defense and hardeningstars22,5662026-10-21Not ratedteleportgravitational/teleportReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars21,0162026-10-20Not ratedsandboxiesandboxie-plus/sandboxieReview coming soon (opens GitHub in a new tab)Malware analysis / Defense and hardeningstars19,7662026-10-23Not ratedopenshellnvidia/openshellReview coming soon (opens GitHub in a new tab)Defense and hardening / Malware analysisstars18,9472026-10-24Not ratedhydraory/hydraReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars17,6272026-07-29Not ratedlyniscisofy/lynisReview coming soon (opens GitHub in a new tab)Vulnerability scanning / Defense and hardening / Web securitystars16,5412026-09-16Not ratedzitadelzitadel/zitadelReview coming soon (opens GitHub in a new tab)Defense and hardeningstars15,4182026-10-23Not ratedcrowdseccrowdsecurity/crowdsecReview coming soon (opens GitHub in a new tab)Defense and hardening / Network / Web securitystars15,2782026-10-23Not ratedoauth2-proxyoauth2-proxy/oauth2-proxyReview coming soon (opens GitHub in a new tab)Defense and hardening / Web securitystars15,2572026-10-23Not ratedratholerathole-org/ratholeReview coming soon (opens GitHub in a new tab)Defense and hardeningstars14,3702026-08-23Not ratedopensnitchevilsocket/opensnitchReview coming soon (opens GitHub in a new tab)Defense and hardeningstars14,2072026-07-26Not ratedkratosory/kratosReview coming soon (opens GitHub in a new tab)Defense and hardeningstars13,9332026-07-29Not ratedluluobjective-see/luluReview coming soon (opens GitHub in a new tab)Defense and hardeningstars13,4032026-10-23Not ratedkeewebkeeweb/keewebReview coming soon (opens GitHub in a new tab)Defense and hardeningstars13,0222026-05-08Not ratedsigmasigmahq/sigmaReview coming soon (opens GitHub in a new tab)Incident response / Network / Defense and hardeningstars11,3332026-10-21Not rateddexdexidp/dexReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars11,2082026-10-23Not ratedbunkerwebbunkerity/bunkerwebReview coming soon (opens GitHub in a new tab)Defense and hardening / Web security / Containers and cloudstars11,1062026-10-23Not ratedthe-practical-linux-hardening-guidetrimstray/the-practical-linux-hardening-guideReview coming soon (opens GitHub in a new tab)Defense and hardeningstars10,8972024-11-19Not ratedawesome-honeypotsparalax/awesome-honeypotsReview coming soon (opens GitHub in a new tab)Defense and hardening / Learning and practice labsstars10,6192026-06-01Not ratedmodsecurityowasp-modsecurity/modsecurityReview coming soon (opens GitHub in a new tab)Defense and hardeningstars9,8272026-10-15Not ratedtpotcetelekom-security/tpotceReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars9,6362026-10-21Not ratedsimplewallhenrypp/simplewallReview coming soon (opens GitHub in a new tab)Defense and hardeningstars9,1952026-10-18Not ratedaws-vault99designs/aws-vaultReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars9,0002025-12-30Not ratedcertificatessmallstep/certificatesReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars8,9802026-10-23Not ratedclaude-redsnailsploit/claude-redReview coming soon (opens GitHub in a new tab)Reconnaissance / Web security / Defense and hardeningstars8,6332026-10-12Not ratedendlesshskeeto/endlesshReview coming soon (opens GitHub in a new tab)Defense and hardeningstars8,5652024-06-03Not ratedwarpgatewarp-tech/warpgateReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars8,1312026-10-21Not ratedawesome-waf0xinfection/awesome-wafReview coming soon (opens GitHub in a new tab)Defense and hardening / Learning and practice labsstars7,6572026-08-26Not ratedclamavcisco-talos/clamavReview coming soon (opens GitHub in a new tab)Defense and hardeningstars7,4332026-10-22Not ratedfleetfleetdm/fleetReview coming soon (opens GitHub in a new tab)Vulnerability scanning / Defense and hardeningstars7,0392026-10-24Not ratedcowriecowrie/cowrieReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars6,6162026-10-24Not ratedawesome-security-hardeningdecalage2/awesome-security-hardeningReview coming soon (opens GitHub in a new tab)Defense and hardening / Learning and practice labsstars6,5862026-09-22Not ratedwafw00fenablesecurity/wafw00fReview coming soon (opens GitHub in a new tab)Defense and hardeningstars6,5832026-04-19Not ratedprivacy.sexyundergroundwires/privacy.sexyReview coming soon (opens GitHub in a new tab)Defense and hardeningstars6,1382026-02-13Not ratedsandbox-runtimeanthropics/sandbox-runtimeReview coming soon (opens GitHub in a new tab)Defense and hardeningstars6,0572026-10-23Not ratedpfsensepfsense/pfsenseReview coming soon (opens GitHub in a new tab)Defense and hardeningstars5,7602026-03-31Not ratedsysmon-configswiftonsecurity/sysmon-configReview coming soon (opens GitHub in a new tab)Defense and hardening / Incident responsestars5,7062024-07-03Not ratednext-terminalnext-terminal/next-terminalReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars5,6642026-10-18Not ratedansible-collection-hardeningdev-sec/ansible-collection-hardeningReview coming soon (opens GitHub in a new tab)Defense and hardeningstars5,5092026-10-22Not ratedkanidmkanidm/kanidmReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars5,4972026-10-23Not ratedesp_wifi_repeatermartin-ger/esp_wifi_repeaterReview coming soon (opens GitHub in a new tab)Network / Defense and hardeningstars5,2732026-06-08Not ratedwindowsspyblockercrazy-max/windowsspyblockerReview coming soon (opens GitHub in a new tab)Network / Defense and hardeningstars5,2322026-10-15Not rateddetectionlabclong/detectionlabReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars5,0512024-07-06Not ratedpcapdroidemanuele-f/pcapdroidReview coming soon (opens GitHub in a new tab)Network / Defense and hardeningstars4,9662026-10-22Not ratedsecurityonionsecurity-onion-solutions/securityonionReview coming soon (opens GitHub in a new tab)Incident response / Defense and hardeningstars4,9382026-10-23Not ratednaxsinbs-system/naxsiReview coming soon (opens GitHub in a new tab)Defense and hardeningstars4,8052023-11-08Not ratedcoreopnsense/coreReview coming soon (opens GitHub in a new tab)Network / Defense and hardeningstars4,7592026-10-23Not ratedthreathunter-playbookotrf/threathunter-playbookReview coming soon (opens GitHub in a new tab)Incident response / Defense and hardeningstars4,7012026-01-12Not ratedcerboscerbos/cerbosReview coming soon (opens GitHub in a new tab)Defense and hardening / Containers and cloudstars4,6302026-10-23Not ratedhfishhacklcx/hfishReview coming soon (opens GitHub in a new tab)Defense and hardeningstars4,5492026-03-13Not ratedsantagoogle/santaReview coming soon (opens GitHub in a new tab)Defense and hardeningstars4,4982025-02-05Not ratedvelociraptorvelocidex/velociraptorReview coming soon (opens GitHub in a new tab)Defense and hardeningstars4,3742026-10-23Not ratedngx_lua_wafloveshell/ngx_lua_wafReview coming soon (opens GitHub in a new tab)Defense and hardeningstars4,0242024-03-17Not ratedburpsuite-collectionsmr-xn/burpsuite-collectionsReview coming soon (opens GitHub in a new tab)Web security / Defense and hardeningstars3,9872026-10-08Not ratedcorazacorazawaf/corazaReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,9422026-10-24Not ratedhtrace.shtrimstray/htrace.shReview coming soon (opens GitHub in a new tab)Reconnaissance / Network / Defense and hardeningstars3,8642024-11-19Not ratedawesome-http-benchmarkdenji/awesome-http-benchmarkReview coming soon (opens GitHub in a new tab)Web security / Defense and hardening / Learning and practice labsstars3,7862026-09-11Not ratedxzbotamlweems/xzbotReview coming soon (opens GitHub in a new tab)Exploits and PoCs / Defense and hardeningstars3,5532024-04-03Not ratedafwallukanth/afwallReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,5122026-10-17Not ratedbypassavmatro7sh/bypassavReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,4812025-03-28Not ratedwindivertbasil00/windivertReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,3252023-03-15Not ratedcorerulesetcoreruleset/corerulesetReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,3152026-10-24Not ratedsysmon-modularolafhartong/sysmon-modularReview coming soon (opens GitHub in a new tab)Defense and hardening / Incident responsestars3,1692026-10-14Not ratedhardentoolshardentools/hardentoolsReview coming soon (opens GitHub in a new tab)Defense and hardening / Reconnaissancestars3,1142025-08-10Not ratedtelerteler-sh/telerReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,0782024-02-13Not ratedopencanarythinkst/opencanaryReview coming soon (opens GitHub in a new tab)Defense and hardeningstars3,0722026-10-05Not ratedopenraspbaidu/openraspReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,9892025-10-02Not ratedwhatwafekultek/whatwafReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,9332024-08-11Not ratedcontentcomplianceascode/contentReview coming soon (opens GitHub in a new tab)Vulnerability scanning / Defense and hardeningstars2,8282026-10-24Not ratedtirithsheeki03/tirithReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,7642026-10-24Not ratedopenedrcomodosecurity/openedrReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,7382026-05-23Not ratedelkeidbytedance/elkeidReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,6912026-05-11Not ratedwindows_hardening0x6d69636b/windows_hardeningReview coming soon (opens GitHub in a new tab)Defense and hardening / Vulnerability scanningstars2,6712026-10-23Not ratedauthsupabase/authReview coming soon (opens GitHub in a new tab)Defense and hardening / Web securitystars2,5852026-10-22Not ratedfibratusrabbitstack/fibratusReview coming soon (opens GitHub in a new tab)Malware analysis / Incident response / Defense and hardeningstars2,5572026-10-19Not ratedowasp-modsecurity-crsspiderlabs/owasp-modsecurity-crsReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,4882020-06-16Not ratedportspoofdrk1wi/portspoofReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars2,4282026-08-26Not ratednipehtrgouvea/nipeReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,4042026-09-13Not ratedipsumstamparm/ipsumReview coming soon (opens GitHub in a new tab)Defense and hardening / Networkstars2,3982026-10-24Not ratedwhoami-projectowerdogan/whoami-projectReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,3202025-10-13Not ratedvanadiumgrapheneos/vanadiumReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,2452026-10-22Not ratedipbandigitalruby/ipbanReview coming soon (opens GitHub in a new tab)Network / Defense and hardeningstars2,2192026-10-05Not ratededrsmr-un1k0d3r/edrsReview coming soon (opens GitHub in a new tab)Defense and hardening / Red teaming and C2stars2,2102026-04-03Not ratedbeelzebubbeelzebub-labs/beelzebubReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,2072026-10-23Not ratedyulong-hids-archivedysrc/yulong-hids-archivedReview coming soon (opens GitHub in a new tab)Defense and hardeningstars2,1762020-06-29Not ratedkernel-hardening-checkera13xp0p0v/kernel-hardening-checkerReview coming soon (opens GitHub in a new tab)Defense and hardening / Vulnerability scanningstars2,1532026-09-19