Application monitoring platform for developers covering error monitoring, tracing, session replay, profiling, logs, cron monitoring and application metrics across many languages and frameworks.
Sentry collects errors and performance data from applications through SDKs for more than 20 platforms and 60 frameworks, including JavaScript, Python, Java, Go, .NET, mobile and game engines. Its products include error monitoring, tracing, session replay, profiling, structured logs, cron monitoring and application metrics.
It suits engineering teams that want to find and debug production problems at code level. Plans include fixed quotas for errors, spans, replays and logs, with extra usage on some plans billed at additional rates.
Data storage region options (US or EU) are described in the docs.
Free plan available; paid plans from USD 26 per month, billed annually
Free
Limits: 1 user; 5k errors; 5M tracing spans; 50 session replays; 30-day lookback
Page says 'Free' without stating a billing period.
USD 29 per month
Limits: Unlimited users; 50k errors; 5M tracing spans; 50 session replays; up to 90-day lookback
USD 26 per month, billed annually
Limits: Same quotas as Team monthly
USD 89 per month
Limits: Unlimited users; 50k errors; 1,000 metric monitors; unlimited custom dashboards
USD 80 per month, billed annually
Limits: Same quotas as Business monthly
Prices checked on October 24, 2026 from the vendor's official page. Vendors change prices; confirm before buying. How we check prices. Official pricing page (opens in a new tab)
Software engineering teams that need error and performance monitoring for production applications.
This page is based on desk research of the vendor's public pages and documentation. SIDAN Stack has not tested this product hands-on. How we research. Last verified: October 24, 2026.
Algolia is a hosted search and discovery API. Developers push records to indices and query them through official API clients, InstantSearch UI libraries and an Autocomplete library, with features for ranking, synonyms, rules, personalization, recommendations, analytics and A/B testing. Higher tiers add AI ranking, query categorization and NeuralSearch. Pricing is usage-based on search requests and records.
Free plan available; usage-based pricing
Datadog is a cloud monitoring and security platform that brings infrastructure metrics, application traces, logs, real user and synthetic monitoring, database monitoring, CI visibility and security products (code, cloud and SIEM) into one service with shared dashboards, alerting and more than 1,000 built-in integrations. Each product is billed separately, mostly per host, per GB or per million events.
Free plan available; usage-based pricing
Pinecone is a managed vector database for AI applications. Serverless indexes support dense, sparse, full-text and hybrid search with metadata filtering, namespaces for multi-tenancy, integrated embedding and reranking models, backups and dedicated read nodes. Pinecone Assistant adds a managed RAG service. A free Starter plan is available; paid plans bill on storage, read and write units.
Free plan available; paid plans from USD 20 per month
Open-source product platform combining product analytics, session replay, feature flags and experiments, surveys, error tracking, logs and data sources, priced per product on usage above a monthly free allowance.
Free plan available; usage-based pricing
To evaluate a software free plan, first decide whether it is a permanent plan, a time-limited trial or a credit grant; then convert its caps into your expected usage, check seat limits, find out what happens when you exceed a limit, review history retention and export, read the terms of use, map security features to tiers and price the first paid tier. This guide applies those steps to free plans recorded from official pages on 24 October 2026, including Firecrawl, Apify, Zapier, Supabase, Vercel, Notion, GitHub Copilot and Cursor.