Skip to main content
Product Analytics, BI & Session Replay · All-in-One Product OS & AnalyticsView Markdown Twin (.md)

Best Open-Source PostHog Alternatives in 2026 (Self-Hostable)

Compare the 8 best open-source PostHog alternatives in 2026 (Mode Analytics, Fathom Analytics, Plausible Analytics). Side-by-side pricing, pros & cons, and founder benchmarks.

Executive Summary & Quick Verdict

The top open-source alternatives to PostHog in 2026 are Mode Analytics, Fathom Analytics, Plausible Analytics. Founders switch from PostHog (Freemium (Free tier available)) when optimizing for MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in.

If you need MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in, Mode Analytics and Fathom Analytics outperform PostHog on founder ROI and flexibility.

All AlternativesFree AlternativesOpen-SourceFor StartupsFor DevelopersFor SaaS TeamsFor Small BusinessFor AgenciesFor Mac UsersSelf-HostedCheaper & Affordable

Quick Comparison: Top PostHog Competitors (2026)

Rank & ToolBest ForPricingFounder FitHead-to-Head
#1 Mode AnalyticsBest Overall AlternativeOpen Source (Free tier available)94/100PostHog vs Mode Analytics
#2 Fathom AnalyticsBest Value for FoundersOpen Source (Free tier available)88/100PostHog vs Fathom Analytics
#3 Plausible AnalyticsBest Free / Freemium PickPaid · Starts at $9/mo85/100PostHog vs Plausible Analytics
#4 Competitor ResearchBest Developer & AI WorkflowFree (Free tier available)96/100PostHog vs Competitor Research
#5 ThordataBest Open & Extensible PickFree (Free tier available)81/100PostHog vs Thordata
#6 HermesFastest Setup for StartupsUsage-Based · From $29/mo87/100PostHog vs Hermes
#7 MultmetricBest for Scaling TeamsPaid · From $19/mo84/100PostHog vs Multmetric
#8 KalodataBest Budget ReplacementFreemium · From $29/mo81/100PostHog vs Kalodata

Detailed Review of the Best PostHog Alternatives

#1 · Best Overall Alternative

Mode Analytics

Open Source (Free tier available)
Founder Fit: 94/100

Choose Mode Analytics over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Mode Analytics is a analytics & telemetry solution ranked for "mode analytics" (700+ monthly searches).

Key Strengths
  • Strong organic adoption for mode analytics workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Open-source / developer-extensible architecture
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Mode Analytics →View Mode Analytics Alternatives →
#2 · Best Value for Founders

Fathom Analytics

Open Source (Free tier available)
Founder Fit: 88/100

Choose Fathom Analytics over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Fathom Analytics is a analytics & telemetry solution ranked for "fathom analytics" (14,000+ monthly searches).

Key Strengths
  • Strong organic adoption for fathom analytics workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Open-source / developer-extensible architecture
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Fathom Analytics →View Fathom Analytics Alternatives →
#3 · Best Free / Freemium Pick

Plausible Analytics

Paid · Starts at $9/mo
Founder Fit: 85/100

Choose Plausible Analytics over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Lightweight (<1 KB), cookie-free, open-source Google Analytics alternative.

Key Strengths
  • Purpose-built for privacy-first web analytics with fast onboarding
  • Predictable production SLA and team controls
  • Open-source transparency and self-hosting flexibility
Trade-offs to Consider
  • Advanced enterprise customization or niche workflows may require add-ons
  • Self-hosting requires DevOps maintenance if not using managed cloud
Compare PostHog vs Plausible Analytics →View Plausible Analytics Alternatives →
#4 · Best Developer & AI Workflow

Competitor Research

Free (Free tier available)
Founder Fit: 96/100

Choose Competitor Research over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Competitor Research is a analytics & telemetry solution ranked for "find competitor" (300+ monthly searches).

Key Strengths
  • Strong organic adoption for find competitor workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Fast browser-based onboarding with minimal configuration
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Competitor Research →View Competitor Research Alternatives →
#5 · Best Open & Extensible Pick

Thordata

Free (Free tier available)
Founder Fit: 81/100

Choose Thordata over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Thordata is a analytics & telemetry solution ranked for "thordata" (250+ monthly searches).

Key Strengths
  • Strong organic adoption for thordata workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Fast browser-based onboarding with minimal configuration
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Thordata →View Thordata Alternatives →
#6 · Fastest Setup for Startups

Hermes

Usage-Based · From $29/mo
Founder Fit: 87/100

Choose Hermes over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Hermes is a analytics & telemetry solution ranked for "nous research" (4,200+ monthly searches).

Key Strengths
  • Strong organic adoption for nous research workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Fast browser-based onboarding with minimal configuration
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Hermes →View Hermes Alternatives →
#7 · Best for Scaling Teams

Multmetric

Paid · From $19/mo
Founder Fit: 84/100

Choose Multmetric over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Multmetric is a analytics & telemetry solution ranked for "multimetric" (4,500+ monthly searches).

Key Strengths
  • Strong organic adoption for multimetric workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Fast browser-based onboarding with minimal configuration
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Multmetric →View Multmetric Alternatives →
#8 · Best Budget Replacement

Kalodata

Freemium · From $29/mo
Founder Fit: 81/100

Choose Kalodata over PostHog when prioritizing MIT/Apache open-source licensing, GitHub community velocity, and zero vendor lock-in. Kalodata is a analytics & telemetry solution ranked for "kalodata" (2,200+ monthly searches).

Key Strengths
  • Strong organic adoption for kalodata workflows
  • Streamlined analytics & telemetry experience for lean teams
  • Fast browser-based onboarding with minimal configuration
Trade-offs to Consider
  • Teams scaling multi-seat workflows often compare lower-cost or flat-rate alternatives
  • Power users frequently evaluate tools with deeper API, MCP, or self-hosted control
Compare PostHog vs Kalodata →View Kalodata Alternatives →

Frequently Asked Questions

What is the #1 best open-source alternative to PostHog in 2026?

Mode Analytics ranks #1 among PostHog alternatives in 2026 thanks to open source (free tier available) and strong founder fit (94/100).

Are there free or open-source alternatives to PostHog?

Yes. Top free or open-source options include Mode Analytics, Fathom Analytics, Plausible Analytics, Competitor Research.

Where should I launch a new competitor or alternative to PostHog?

Launch your product on FoundrList (/agent) to compete in a full 7-day weekly launch cohort, earn a permanent DR 73 dofollow backlink, and get indexed across AI search engines.

Head-to-Head Comparisons

Related Category Guides

Free Founder Calculators