The CAPTCHA bargain - annoy your users and feed their behavior to Google - gets replaced with economics by mCaptcha. Instead of image puzzles, it uses SHA256 proof-of-work: every visitor's browser silently solves a small computational challenge (via a WebAssembly library) before submitting a form. Humans never notice the milliseconds; bots hammering your site must burn more compute sending requests than your server spends answering them, which makes attacks more expensive than defense - the property that also makes mCaptcha genuine DoS protection, not just bot filtering. Written in Rust, the system is fully automated: difficulty scales with traffic, so challenges stay trivial in normal conditions and harden under attack. The privacy and accessibility wins are structural rather than promised: no tracking, no profiling, no user-pattern data collection, and no visual puzzles that exclude users with visual or cognitive impairments - the design was published in Communications of the ACM. Rate limiting is IP-independent, so users behind NATs, VPNs, or Tor get the same experience instead of endless challenge loops, and proofs resist replay attacks, neutering captcha farms. Migration is deliberately easy: the API is compatible with reCAPTCHA and hCaptcha, making it a drop-in replacement. AGPL-licensed core with proprietary-friendly client libraries.

CAPTCHAs make every visitor solve a puzzle to prove they are human; Mosparo takes the opposite route and checks the submitted content itself, no challenges, no image grids, and no tracking cookies. Drop the customizable checkbox widget into any form and Mosparo inspects each field separately, scoring the entry against your rules the way an email spam filter scores a message. Build field rules for banned words, domains, email addresses, IP addresses and subnets, providers, Unicode blocks, user agents, and websites, each with its own rating weight, or subscribe to shared rule packages that refresh themselves automatically. Every submission lands in an admin inbox with its spam rating, IP address, and verification status, and dashboard charts show valid versus spam traffic plus delayed or blocked requests over time. Legitimate users notice nothing but a plain checkbox, which stays fully usable with assistive technology, while everything Mosparo stores is encrypted and automatically deleted after 14 days. Run one instance for many sites with separate projects, project groups, and member roles, and connect your forms over the documented API from any stack that can send an HTTP request. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

With over 14,000 GitHub stars and a growing global network of security deployments, CrowdSec turns every attack on any participating server into protection for the entire community. The security engine operates as a combined IDS/IPS and WAF, analyzing log sources from Nginx, Apache, SSH, WordPress, and over 50 other services to detect brute force attacks, port scans, web vulnerability exploitation, and credential stuffing in real time. When one server detects a new threat, the attacker's IP is shared through the community blocklist, proactively protecting thousands of other installations before the attacker can reach them. The built-in WAF powered by Coraza v3 inspects HTTP requests at the application layer, validates against OpenAPI schemas, and applies custom rules with flexible AND/OR condition mixing for precise threat detection. Bot detection serves challenge pages with client fingerprinting to distinguish legitimate traffic from automated scrapers and scanners. Remediation components block malicious IPs at multiple infrastructure layers including iptables, nftables, Nginx, HAProxy, Cloudflare, and AWS Security Groups through the detect-here-remedy-there architecture. The scenario-based detection system ships with default rules for common attack patterns and supports custom scenarios written in YAML with an expressive filter language. A centralized console provides real-time visualization of alerts, threat intelligence analysis, and management of multiple distributed security engines. GDPR compliant by design, all log analysis happens locally and raw logs never leave your infrastructure. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Hand-editing nginx configuration files to run a firewall is nobody's idea of a good afternoon, and Nginx-Love turns that chore into a dashboard. You manage domains, load balancing upstreams, and HTTPS backends through forms instead of config syntax, and the platform writes and reloads the underlying configuration for you. A ModSecurity firewall with the OWASP Core Rule Set inspects traffic to your sites, and you tune its rules from the interface rather than a text editor. Certificates arrive two ways: automated through Let's Encrypt, or uploaded manually when you bring your own. A Bot Manager fingerprints visitors with JA4 signals so you can welcome good crawlers, challenge suspicious automation, and block hostile bots by policy. Access lists filter by IP address, geography, and user agent, and multi-user roles let administrators, moderators, and viewers each see the controls appropriate to their job. Monitoring watches performance and attack patterns, sending alerts by email or Telegram when something needs attention. Configuration exports back up your setup, restores bring it back, and multi-node sync keeps a cluster of servers enforcing the same policy. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Providing an intuitive control plane for modern reverse proxy infrastructure, CaddyUI enables system administrators to manage proxy hosts, automated TLS certificates, and traffic routing without hand-editing configuration files. Operators can create and adjust reverse proxy destinations, URL path rewrites, custom headers, and redirection rules using structured forms that validate against the proxy engine before saving. The platform coordinates automatic ACME certificate requests and renewals, displaying live certificate expiration timelines, validation stages, and internal self-signed certificate authority options for local network services. Fleet management tools synchronize proxy rules across multiple distributed server instances, preventing configuration drift across staging and production clusters. Automated post-deployment health checks verify upstream endpoint availability, HTTP status codes, and latency thresholds, instantly rolling back to the previous configuration if an expectation fails. An integrated observability suite delivers real-time visitor traffic analytics, geographic maps, HTTP response code breakdowns, and single-click client IP blocking to counter malicious probing attempts. Administrators can schedule automated database backups, configure multi-user access with role permissions, and integrate CrowdSec threat intelligence to protect backends. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.

Gately keeps your domain names current, forwards ports, terminates HTTPS, and blocks hostile traffic from one admin console, so a server or home network needs no pile of separate gateway tools. Dynamic DNS updates records at Cloudflare, Alibaba Cloud, Tencent Cloud, DNSPod, Huawei Cloud, Route 53, OVHcloud, Gandi, Namecheap, DuckDNS, and other providers, finding the public address over IPv4 or IPv6 by URL, network interface, or command. Port forwarding relays TCP and UDP with port ranges, failover targets, connection limits, traffic statistics, and PROXY protocol, while SNI routing lets several services share port 443. Certificates are issued and renewed through ACME with DNS-01 wildcards or HTTP-01, then pushed to other hosts over SSH. Web services add per-domain reverse proxies, redirects, and static sites with HTTP/3, WebSocket, load balancing, health checks, rate limiting, caching, and sign-in through OIDC, GitHub, Google, or TOTP-protected shared users. A WAF running the OWASP Core Rule Set and fail2ban-style jails with trap ports and nftables bans guard the edge. Manage Docker containers and Compose projects with one-click upgrades and rollback, open SSH sessions with an SFTP file manager, run ping, traceroute, and speed tests, and receive alerts in Telegram, Discord, Slack, ntfy, or email. An audit log, config history with diff and rollback, encrypted backups, scoped API tokens, and Prometheus metrics round it out. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Leave a fake door unlocked and see who walks through: Krawl is a self-hosted honeypot that poses as a sloppy web server and records everything scanners and scrapers try. Fake WordPress, phpMyAdmin, and admin logins. Every attempt logged, every credential captured. A .env file leaking fake database strings, AWS keys, and Stripe secrets. SQL injection, XSS, path traversal, XXE, and command injection traps that answer with believable fake output. SQLMap gets a different database error on every request. Malicious crawlers wander an endless maze of random links. An optional tarpit adds delay and word salad that cost scrapers time, storage, and tokens. Optional AI-generated pages write a plausible decoy for any path an attacker requests. A hidden dashboard shows an attacker map, top IPs, captured credentials, and per-IP forensics. TLSH fuzzy hashing groups webshell variants into campaigns. A behavior score labels each IP attacker, bad crawler, good crawler, or regular user. Export bans as raw lists, iptables, or nftables rules, with guides for Fail2Ban, OPNsense, and RouterOS. A canary-token link in decoy pages emails you the IP and user agent of anyone who follows it. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Snitch is a self-hosted network monitor and outbound firewall that shows every connection your server makes, which process opened it, and where in the world it goes, then lets you block it on the spot. A live force graph puts your machine at the center with each remote host as a node, while a world map plots geolocated destinations and a sliding timeline keeps the last day of traffic searchable. Every alert is actionable: block the IP, kill or suspend the process, or write a rule that firewalls matched hosts automatically by address, domain, port, country, or ASN. Detection covers port scans, beaconing, DNS tunneling, ICMP tunnels, cleartext ports, and self-signed or mismatched TLS certificates, and an isolation-forest model learns your normal flows and flags outliers. A lockdown switch cuts all public outbound traffic while the LAN stays up, for the moment something looks wrong. Findings can stream to Wazuh, Splunk, or Elastic as syslog and ECS events, or land in Discord, Slack, and Telegram as webhook alerts. Everything stays on your machine: history lives in a local database, geolocation works fully offline, and the interface speaks eight languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Fail2Ban quietly bans thousands of bots on a typical VPS and just as quietly keeps the whole story buried in a log file nobody reads, and Fail2Ban Report digs that story out into a dashboard you will actually open. Shell scripts convert each day of fail2ban.log into JSON, and the web interface lays every ban and unban on a searchable, filterable timeline you can slice by jail, server, or time window. Aggregated statistics for today, yesterday, seven days, and thirty days show which jails absorb the most attacks, while markers flag repeat offenders and escalating ban counts so persistent scanners stand out from one-time noise. Blocklists live per jail and per server as plain JSON, and ban or unban actions execute through UFW, giving you permanent bans that survive independently of jail restarts. Bulk actions handle whole ranges at once, with a pending state until the next sync applies them. Multiple servers feed one console through a pull-based HTTPS endpoint, so a fleet of small machines reports to a single pane without exposing SSH. Optional AbuseIPDB and IP-Info lookups add reputation and region context to any address. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

TLSPROXY puts automatic Let's Encrypt TLS in front of every service on your server, so many names can share one port while each backend gets exactly the encryption treatment it needs. Terminate TLS and hand plain text to a local service. Pass raw TLS straight through when the proxy should see nothing. Or terminate and re-encrypt towards a TLS backend, with client certificates checked on the way in. QUIC and HTTP/3 connections terminate here too, and Encrypted Client Hello keeps even the handshake private. Certificates arrive and renew by themselves through http-01 and tls-alpn-01 challenges, PROXY protocol headers preserve real client addresses, and SNI routing with round-robin balancing spreads names across backends. People get in with OpenID Connect, SAML, or passkeys; the same sign-in can mint short-lived SSH user certificates, and built-in certificate authorities manage client and backend credentials for you. Static sites can be served straight from disk, TPM-backed keys keep private material in hardware, and a built-in console shows what the proxy is doing. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Where Traefik's built-in dashboard only shows what is running, Traefik Manager lets you change it: add routes, middlewares, and services from forms and wizards instead of editing YAML by hand. A first-run wizard connects to the Traefik API, creates a route for the manager itself, and sets the admin password. After that, the dashboard turns every route into a launchable app card with live health, and the Route Map draws each request from entry point through middlewares to backend. New routes use a slide-in form for HTTP, TCP, or UDP with several domains and backends, sticky sessions, and health checks. 30 middleware wizards handle authentication, rate limiting, headers, CORS, and redirects, and weighted, mirroring, or failover services can be built on their own. For day-to-day monitoring, the Certificates tab tracks expiry from acme.json, the Logs tab turns the access log into clickable analytics, the CrowdSec tab lists attacks and bans, and alerts reach Discord, Slack, ntfy, Telegram, and more. Changes to traefik.yml apply with a one-click restart, every edit is backed up locally and can be pushed to a git repository, and a lightweight agent brings remote Traefik servers into the same interface. Sign in with TOTP two-factor or OIDC single sign-on, in any of 14 languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

HAProxy Cluster Manager puts a web console on top of HAProxy, so you publish services, issue certificates, and cluster nodes from forms instead of hand-editing haproxy.cfg. Publishing a service takes two inputs, the public URL and the backend address, and the wizard builds the frontend, backend pool, host condition, routing rule, HTTPS listener, certificate, and HTTP redirect, with a preview of the exact configuration before anything applies. Every change is rendered and checked with haproxy -c before it is written, and a failed reload rolls back to the previous file automatically. Certificates come from Let's Encrypt through acme.sh, using HTTP-01 or DNS-01 with about 190 DNS providers, and renewals reload HAProxy and push the new certificate to every node on their own. Any number of nodes share one virtual IP through Keepalived: configuration and certificates sync between them, only the node holding the address is editable, and the dashboard flags split brain, an unclaimed virtual IP, or a node running stale configuration. You can gate services behind basic sign-in or OIDC single sign-on enforced by HAProxy itself, watch traffic statistics and logs, take transition alerts by email, Pushover, or webhook, and expose Prometheus metrics and Home Assistant entities. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.