A free Python command-line tool that checks a website's HTTPS certificate and tells you exactly what's wrong with it — expired, untrusted, wrong hostname — instead of a generic connection error.
github.com
Alternatives to
Highlight.io
Best alternatives to Highlight.io in 2026
When a user reports "the app broke" but can't say what they clicked, developers usually have to guess. Highlight.io records a video-like replay of what the user actually did — clicks, network requests, console errors — and links it directly to the backend error and logs that happened at the same moment, so the whole story is in one place instead of scattered across four different tools. Highlight.io is an open-source, fullstack monitoring platform combining session replay, error monitoring, logging and distributed tracing. It records browser sessions with console and network activity, correlates them with backend errors via OpenTelemetry, and stores everything in a ClickHouse-backed datastore with customizable dashboards and alerts. It supports modern frontend and backend frameworks (React, Next.js, Angular, Vue, Node, Rails) and can be self-hosted via Docker or run as a managed cloud service. Pricing runs from a free tier (500 sessions/month) through Pay-as-you-go at $50/month, Business at $800/month, up to Enterprise and self-hosted-Enterprise tiers with custom pricing.
Quick comparison of Highlight.io alternatives
| # | Tool | Best for | Price |
|---|---|---|---|
| 1 | Équipes DevOps/SRE et administrateurs système voulant un moniteur d'expiration de certificat sans dépendance pour cron/CI | — | |
| 2 | Utilisateurs self-hosted et homelab gérant une infrastructure Docker | — | |
| 3 | Chercheurs en sécurité, développeurs, équipes DevSecOps, threat hunters. | — | |
| 4 | Platform engineers | DevOps teams | SRE teams | — | |
| 5 | Développeurs | — | |
| 6 | Entreprises | Développeurs | — | |
| 7 | Développeurs | — | |
| 8 | Développeurs | — | |
| 9 | Développeurs | — | |
| 10 | Développeurs | — | |
| 11 | Développeurs | — | |
| 12 | Professionnels de l'informatique | — | |
| 13 | Développeurs | — |
#1
- ✓ Zero dependencies, easy to drop into bare servers or containers
- ✓ Detailed diagnostics rather than a generic 'connection failed'
#2
Automated Docker/Podman updates with healthcheck-gated rollback and multi-channel control (web UI, Telegram, Discord).
github.com
- ✓ Automatic rollback to the last known-good image if a healthcheck fails after an update
- ✓ Granular per-container policies for major, minor, and patch updates
#3
A free tool that goes through a GitHub repository looking for accidentally-committed passwords, API keys, and sensitive files — the digital equivalent of checking your pockets before publishing.
github.com
- ✓ 25+ formats de clés détectés, regex + entropie
- ✓ Interface web en plus du CLI, zéro installation
#4
Open-source observability platform that unifies traces, metrics and logs in one OpenTelemetry-native tool, self-hosted or cloud.
signoz.io
- ✓ Free, MIT-licensed self-hosted Community Edition
- ✓ OpenTelemetry-native — one datastore for traces, logs, metrics
FAQ about Highlight.io alternatives
- What is the best alternative to Highlight.io in 2026?
- Based on our selection, TLS Sentry is the best alternative to Highlight.io in 2026. A free Python command-line tool that checks a website's HTTPS certificate and tells you exactly what's wrong with it — expired, untrusted, wrong hostname — instead of a generic connection error.. See our full ranking above to compare all options.
- Is Highlight.io free?
- Highlight.io is a paid tool. Several alternatives in our selection offer free or freemium versions.
- How many alternatives to Highlight.io are there?
- mySelectas has listed 13 alternatives to Highlight.io in the Monitoring & Observability category. Our selection is updated regularly to include the best options available.