Datadog's APM pricing runs about $31 per host per month on top of separate infrastructure and log-indexing fees, and host count is billed at its monthly peak — a five-day traffic spike can lock in the higher rate for the full billing cycle. New Relic replaces per-host billing with a per-GB ingest meter plus a per-user Full Platform seat fee that can run into the hundreds of dollars per engineer per month, so cost climbs with headcount as much as with traffic. Running SigNoz or Uptrace on ClickHouse, or OpenObserve and Grafana Loki on S3-compatible object storage, decouples retention cost from both host count and seat count — you provision disk, not per-engineer licenses. Because SigNoz, HyperDX, Uptrace, and Jaeger v2 all ingest OTLP natively, existing OpenTelemetry SDK instrumentation can point straight at a self-hosted collector without rewriting agents or swapping out vendor-specific tracer code.
| Name | Main Category | Sub-Category | Target Alternative | Free Tier Summary | Self-Hostable? | Short Description | Primary Link |
|---|---|---|---|---|---|---|---|
HyperDX | Product Analytics & Monitoring | Unified Observability & Front-End RUM (ClickStack) | Datadog / New Relic / LogRocket (RUM & Session Replay) | 100% Free - Self-Hosted (MIT-licensed UI, Apache 2.0 collector; runs on your own ClickHouse) | Yes - Docker | ClickHouse-backed observability platform now maintained by ClickHouse (as part of ClickStack) that correlates session replays, logs, traces, metrics, and Core Web Vitals into one searchable timeline. Deploys via Docker Compose and runs directly on top of your own ClickHouse cluster. | |
Grafana Loki | DevOps & Application Hosting | Log Aggregation | Datadog / New Relic (Log Management) | 100% Free - Self-Hosted (AGPLv3) | Yes - Docker | Label-indexed log aggregation system that stores compressed log bodies in S3-compatible object storage instead of a full-text index, queried with LogQL and rendered natively inside Grafana. Cuts log storage cost sharply versus Elasticsearch-backed systems while still correlating with Tempo traces and Prometheus metrics. | |
Uptrace | DevOps & Application Hosting | APM / Distributed Tracing | Datadog / New Relic | 100% Free - Self-Hosted (BSL 1.1, converts to Apache 2.0 after 4 years) | Yes - Docker | OpenTelemetry-native APM combining distributed tracing, metrics, and logs on a ClickHouse and PostgreSQL backend, with purpose-built UQL and MQL query languages for slicing span and metric data. Free for production self-hosting; only reselling Uptrace itself as a competing hosted service is restricted. | |
OpenObserve | DevOps & Application Hosting | Unified Observability / Log Management | Datadog / New Relic | 100% Free - Self-Hosted (AGPL-3.0) | Yes - Docker | Single Rust binary that ingests logs, metrics, traces, and RUM data over OTLP or Prometheus remote-write and stores it in S3/MinIO-compatible object storage instead of a search index. Ships with dashboards, alerts, and pipelines in the open-source build, with no per-GB fee when self-hosted. | |
SigNoz | Product Analytics & Monitoring | Full-Stack APM & Frontend RUM (OpenTelemetry) | Datadog / New Relic / LogRocket (RUM & Session Replay) | 100% Free - Self-Hosted Community Edition (MIT Core, no host/data limits; SAML/OIDC SSO gated to Enterprise) | Yes - Docker & Kubernetes (Helm) | OpenTelemetry-native APM and observability platform backed by ClickHouse that unifies traces, metrics, logs, and frontend RUM data (including Core Web Vitals and JavaScript error tracking) in one UI. Deploys via Docker Compose or Helm, providing Datadog-style flamegraphs and service maps with no per-host fees or ingestion caps. | |
Coroot | DevOps & Application Hosting | eBPF APM / Observability | Datadog / New Relic | 100% Free - Self-Hosted (Apache 2.0) | Yes - Docker | eBPF-based observability tool that builds service maps, metrics, logs, traces, and continuous profiling data without any code instrumentation or SDKs. AI-assisted root cause analysis and predefined SLO inspections ship in the free self-hosted edition. | |
Jaeger | DevOps & Application Hosting | Distributed Tracing | Datadog APM / New Relic APM | 100% Free - Self-Hosted (Apache 2.0) | Yes - Docker | CNCF-graduated distributed tracing backend, rebuilt in v2 on the OpenTelemetry Collector framework so it accepts OTLP natively on ports 4317/4318 with no separate agent process. Ships as a single binary or container with pluggable storage (Cassandra, Elasticsearch, or ClickHouse) for teams that need tracing without a full logs-and-metrics platform. |
Stape bills per request once you outgrow its free tier. These open-source tag managers give you server-side tracking on infrastructure you control.
Typeform caps your responses and Qualtrics hides pricing behind a sales call — these self-hosted tools skip both.
Datadog and Checkly bill per test run across every check and location. These self-hosted tools give you unlimited synthetic checks instead.
Open-source RUM tools with session replay, JS error tracking, and Core Web Vitals — no per-session billing or vendor data caps.
Atlassian is retiring Opsgenie and Grafana archived its OSS on-call tool. Here are five self-hosted platforms that still page, escalate, and route alerts.
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Five self-hosted platforms that track visitors without cookies or consent banners, replacing Google Analytics and Adobe Analytics for GDPR-first teams.
Four open-source platforms replicate Mixpanel and Amplitude's event funnels and retention cohorts without per-tracked-user billing spikes.
RDS and Cloud SQL restrict superuser access and bill per GB for IOPS and backups. These self-hosted platforms give you both back.
Neo4j Aura's per-GB pricing and node caps get expensive fast. These self-hosted graph databases handle the same Cypher queries and knowledge graphs for free.
Escape Hasura Cloud's per-hour and per-GB billing with open-source engines that turn any Postgres schema into a live GraphQL or REST API.
Airtable's per-seat pricing adds up fast. These open-source, self-hosted tools give you the same grid-and-view interface on a database you actually own.