Dev tools · alternatives · 2026
24 alternatives to GitHub
subdomain-scanner200ok
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Subscan is a Go-based CLI tool that helps bug bounty hunters and pentesters with subdomain discovery (passive and brute-force), scoring (HTTP/TLS/CNAME), and misconfig probes (takeovers, open .envs, S3 buckets, etc). Output formats include JSON/CSV/HTML/Markdown. GitHub: https://github.com/omerimzali/subscan Looking for feedback!
2025 · github.com · its alternatives →
- 2
A website server that supports serving many websites using subdomain-based routing. - xieyuheng/x-server
2023 · github.com · its alternatives →
- 3
Hey HN, we built Subtrace (https://subtrace.dev) to let you see all incoming and outgoing requests in your backend server—like Wireshark, but for Docker containers. It comes with a Chrome DevTools-like interface. Check out this video: https://www.youtube.com/watch?v=OsGa6ZwVxdA, and see our docs for examples: https://docs.subtrace.dev. Subtrace lets you see every request with full payload, headers, status code, and latency details. Tools like Sentry and OpenTelemetry often leave out these crucial details, making prod debugging slow and annoying. Most of the…
2025 · github.com · its alternatives →
- 4
- 5
Discover and enumerate all subdomains associated with a website, including those not publicly advertised. Use this tool to conduct thorough security assessments, validate your organization's digital footprint, or enhance your reconnaissance capabilities for penetration testing and bug bounty hunting
2024 · github.com · its alternatives →
- 6
A tiny command line DNS client with support for UDP, TCP, DoT, DoH, DoQ and ODoH. - natesales/q
2022 · github.com · its alternatives →
- 7
Hello! I'm learning Rust and also information security, so what better way to learn than to put a tool together practicing both skills? I've tried to use a couple of different tools for subdomain enumeration (part of the Discovery-party when it comes to penetration testing), but none of them were very fast, even if the DNS resolver I pointed them towards is, so I wrote my own tool that leverages concurrency to check a lot of subdomains, fast! It's written in Rust, main parts being using Tokio and async_channels, and I think it works good enough for a first release. I wanted to get recursive…
2022 · github.com · its alternatives →
- 8
Domain Digger▲198Full open-source toolkit for next-level domain analysis
2024 · digger.tools · its alternatives →
- 9
- 10
Instantly returns the subdomains of 582 million domain names
2021 · subdomains.whoisxmlapi.com · its alternatives →
- 11GB
2014 · dns-api.com · its alternatives →
- 12
I wrote a script to scan top sub-reddits and calculate the total number of malicious domains associated to the links posted.
2024 · pangea.cloud · its alternatives →
- 13
An hourly updated list of subdomains gathered from certificate transparency logs - internetwache/CT_subdomains
2018 · github.com · its alternatives →
- 14
A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration) - blechschmidt/massdns
2016 · github.com · its alternatives →
- 15GW
2025 · wildcard.jolly-ops.com · its alternatives →
- 16
- 17
2021 · github.com · its alternatives →
- 18
I built a CLI to benchmark DNS resolvers after discovering DNS was adding 300ms to my API requests. v0.3.0 just released with new features: compare: Test single domain across all resolvers top: Rank resolvers by latency/reliability/balanced monitor: Continuous tracking with threshold alerts 1,400+ downloads in first week. Quick start: pip install dns-benchmark-tool dns-benchmark compare --domain google.com CLI stays free forever. Hosted version (multi-region, historical tracking, alerts) coming Q1 2026. GitHub: https://github.com/frankovo/dns-benchmark-tool…
Nov 2025 · github.com · its alternatives →
- 19
Free subnet calculator for IPv4 and IPv6. Get the network address, broadcast, mask, wildcard and usable host range instantly. CIDR cheat sheet included.
2016 · subnet.im · its alternatives →
- 20
A global DNS propagation checker that gives pretty output. Written in dotnet core - unfrl/dug
2021 · github.com · its alternatives →
- 21
:rocket: Ping IP addresses and domains in parallel to find the accessible and inaccessible ones. - GitHub - shivammathur/IPpy at yc
2017 · github.com · its alternatives →
- 22
A fast way to scan your server for outdated software and potential exploits. - PatrolServer/bashscanner
2015 · github.com · its alternatives →
- 23
Lightweight open-source DDoS traffic monitor. Stdout output, no account required - Flowtriq/ftagent-lite
May 2026 · github.com · its alternatives →
- 24
Automatic scan for unintentionally exposed sensitive files.
2022 · its alternatives →
Also compare
- Subscan - CLI tool for subdomain recon alternatives
- Deploying subdomain-based routing like github.io alternatives
- Subtrace – Wireshark for Docker Containers alternatives
- tldx alternatives
- Subdomain Enumeration CLI alternatives
- "q", a DNS query tool with support for UDP, TCP, DoT, DoH, DoQ and ODoH alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →