Open-source security and uptime monitoring that scans for missing security headers, expiring SSL certs, exposed secrets, and downtime.
Best alternatives to Zelos in 2026
Teams building physical hardware — robots, vehicles, batteries, industrial equipment — face a data problem software teams don't: telemetry comes from dozens of different protocols and vendor tools, and there's rarely one place to see it all together, compare a test run from last week to one from today, or ask a plain-language question about what a sensor was doing at a specific moment. Zelos is built to be that one place, pulling in signals from industrial protocols directly and giving engineers a single workspace to observe, control, and test hardware systems as they move from prototype to production. Technically, it natively integrates with industrial protocols including CAN, Modbus, OPC UA, and EtherCAT, offers real-time signal monitoring and recording, side-by-side comparison of different test runs, AI-powered natural-language querying across collected data, precision measurement tools, shared team layouts, built-in remote control actions, and SDKs for Python, Rust, and Go plus CLI automation, with a local-first approach to data privacy. There's a free tier available for macOS, Windows, and Linux; paid tiers exist but pricing details aren't published. Zelos is Y Combinator-backed (S23 batch), founded by engineers who previously worked at Tesla and Neuralink — direct experience with exactly the kind of mission-critical hardware data problems the product addresses.
Quick comparison of Zelos alternatives
| # | Tool | Best for | Price |
|---|---|---|---|
| 1 | Developers, freelancers, and agencies monitoring uptime and security posture for client sites | — | |
| 2 | DevOps/SRE teams, especially in regulated/data-residency-constrained environments | — | |
| 3 | Developers and engineers building AI applications needing production observability | — | |
| 4 | Teams wanting self-hosted uptime monitoring with fewer false alarms | — | |
| 5 | Développeurs et équipes techniques voulant surveiller le web en continu sans dépendre d'un seul moteur de recherche | — | |
| 6 | Développeurs et équipes CI/CD voulant diagnostiquer des incidents localement sans envoyer leurs logs dans le cloud | — | |
| 7 | Équipes DevOps et self-hosters gérant quelques serveurs/containers qui veulent un tableau de bord de disponibilité | — | |
| 8 | Équipes QA, développeurs et support technique qui reçoivent des rapports de bugs imprécis de la part de non-techniciens | — | |
| 9 | Développeurs et mainteneurs de serveurs MCP voulant des analyses d'usage et de fiabilité | — | |
| 10 | Équipes SRE et ops voulant expérimenter la réponse aux incidents assistée par IA avec des garde-fous | — | |
| 11 | Équipes construisant des applications LLM/agents ayant besoin de tracer coûts et performance des appels modèles | — | |
| 12 | Équipes développant ou évaluant des outils d'observabilité/APM ayant besoin de données de télémétrie réalistes sans vraie infra | — |
- ✓ Combines uptime, SSL expiration, security header, and exposed-secret scanning in one tool
- ✓ Open-source and free forever when self-hosted
Self-hosted, AI-powered root cause analysis for on-call alerts from Grafana, Datadog and Prometheus.
- ✓ Self-hosted, works fully air-gapped with local Ollama models
- ✓ Correlates commits, logs and metrics automatically for root cause hints
Open-source, self-hosted observability platform for LLM applications, built on OpenTelemetry.
- ✓ Free and open source (Apache 2.0)
- ✓ OpenTelemetry-native — integrates with existing OTel pipelines
Self-hosted uptime monitoring with multi-region quorum voting to cut false alarms.
- ✓ Multi-region quorum voting reduces false-positive alerts
- ✓ Open source (MIT), self-hosted, runs on a $5 VPS
An open-source cloud agent that keeps re-running a web search on a schedule across 13+ search providers, and pings Slack or a webhook only when something new matches your criteria.
- ✓ 13+ fournisseurs de recherche interchangeables sans changer d'outil
- ✓ Filtrage en langage naturel
A local-first, offline log analysis tool written in Go that turns raw application logs into structured incident diagnoses with evidence-based root-cause hypotheses.
- ✓ Completely offline and self-contained, no cloud dependency or telemetry
- ✓ Explainable anomaly detection (statistical baselines, not black-box ML)
A lightweight, self-hosted service health dashboard written in Go that auto-discovers Docker containers and monitors uptime via heartbeats and active HTTP/TCP/ICMP checks.
- ✓ Minimal dependencies: single binary, SQLite, no CGO
- ✓ Multiple discovery methods: Docker auto-discovery, push API, active polling
Chrome extension that captures a screenshot, video, console logs, and network details of a bug in one click, no manual writeup needed
- ✓ Capture automatique complète en un clic : screenshot, vidéo, logs console, infos réseau
- ✓ Lien partageable sans inscription requise pour la personne qui rapporte le bug
One-line analytics integration for MCP servers, showing which AI clients connect, tool adoption, and silent failures
- ✓ Intégration en une ligne de code, overhead d'implémentation minimal
- ✓ Rapports hebdomadaires en langage clair avec recommandations concrètes plutôt que des tableaux bruts
Open-source platform for letting AI agents safely investigate and respond to production incidents, with built-in guardrails
- ✓ Garde-fous de sécurité production pensés dès le départ
- ✓ Support multi-LLM large
Observability platform purpose-built for tracing and cost-tracking LLM applications
- ✓ Built on OpenTelemetry/OTLP — no proprietary trace format lock-in
- ✓ Cost tracking across 8,600+ model identifiers with reasoning-token separation
Fake but realistic telemetry generator to test your observability stack without real infrastructure
- ✓ Simulates up to 28 microservices without deploying real infrastructure
- ✓ Realistic failure injection (retry storms, saga compensation, timeout cascades)
FAQ about Zelos alternatives
- What is the best alternative to Zelos in 2026?
- Based on our selection, StatusScout is the best alternative to Zelos in 2026. Open-source security and uptime monitoring that scans for missing security headers, expiring SSL certs, exposed secrets, and downtime.. See our full ranking above to compare all options.
- Is Zelos free?
- Zelos is a paid tool. Several alternatives in our selection offer free or freemium versions.
- How many alternatives to Zelos are there?
- mySelectas has listed 12 alternatives to Zelos in the Monitoring & Observability category. Our selection is updated regularly to include the best options available.