---
title: "Best Open-Source PostHog Alternatives in 2026 (Self-Hostable)"
description: "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."
canonical_url: "https://www.foundrlist.com/alternatives/posthog-open-source"
markdown_url: "https://www.foundrlist.com/alternatives/posthog-open-source.md"
target_product: "PostHog"
category: "Product Analytics, BI & Session Replay"
---

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

> **Executive Summary**: 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.

**Quick Verdict**: 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.

## Top PostHog Alternatives Comparison Table

| Rank | Alternative | Verdict | Pricing | Founder Fit | Compare |
| --- | --- | --- | --- | --- | --- |
| #1 | [Mode Analytics](https://www.foundrlist.com/alternatives/mode-analytics) | Best Overall Alternative | Open Source (Free tier available) | 94/100 | [PostHog vs Mode Analytics](https://www.foundrlist.com/compare/posthog-vs-mode-analytics) |
| #2 | [Fathom Analytics](https://www.foundrlist.com/alternatives/fathom-analytics) | Best Value for Founders | Open Source (Free tier available) | 88/100 | [PostHog vs Fathom Analytics](https://www.foundrlist.com/compare/posthog-vs-fathom-analytics) |
| #3 | [Plausible Analytics](https://www.foundrlist.com/alternatives/plausible) | Best Free / Freemium Pick | Paid · Starts at $9/mo | 85/100 | [PostHog vs Plausible Analytics](https://www.foundrlist.com/compare/posthog-vs-plausible) |
| #4 | [Competitor Research](https://www.foundrlist.com/alternatives/competitor-research) | Best Developer & AI Workflow | Free (Free tier available) | 96/100 | [PostHog vs Competitor Research](https://www.foundrlist.com/compare/posthog-vs-competitor-research) |
| #5 | [Thordata](https://www.foundrlist.com/alternatives/thordata) | Best Open & Extensible Pick | Free (Free tier available) | 81/100 | [PostHog vs Thordata](https://www.foundrlist.com/compare/posthog-vs-thordata) |
| #6 | [Hermes](https://www.foundrlist.com/alternatives/hermes-4) | Fastest Setup for Startups | Usage-Based · From $29/mo | 87/100 | [PostHog vs Hermes](https://www.foundrlist.com/compare/posthog-vs-hermes-4) |
| #7 | [Multmetric](https://www.foundrlist.com/alternatives/multmetric) | Best for Scaling Teams | Paid · From $19/mo | 84/100 | [PostHog vs Multmetric](https://www.foundrlist.com/compare/posthog-vs-multmetric) |
| #8 | [Kalodata](https://www.foundrlist.com/alternatives/kalodata) | Best Budget Replacement | Freemium · From $29/mo | 81/100 | [PostHog vs Kalodata](https://www.foundrlist.com/compare/posthog-vs-kalodata) |

## Detailed Breakdown of PostHog Competitors

### #1. Mode Analytics (Best Overall Alternative)
- **Pricing**: Open Source (Free tier available)
- **Founder Fit**: 94/100
- **Why Choose Over PostHog**: 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

### #2. Fathom Analytics (Best Value for Founders)
- **Pricing**: Open Source (Free tier available)
- **Founder Fit**: 88/100
- **Why Choose Over PostHog**: 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

### #3. Plausible Analytics (Best Free / Freemium Pick)
- **Pricing**: Paid · Starts at $9/mo
- **Founder Fit**: 85/100
- **Why Choose Over PostHog**: 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

### #4. Competitor Research (Best Developer & AI Workflow)
- **Pricing**: Free (Free tier available)
- **Founder Fit**: 96/100
- **Why Choose Over PostHog**: 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

### #5. Thordata (Best Open & Extensible Pick)
- **Pricing**: Free (Free tier available)
- **Founder Fit**: 81/100
- **Why Choose Over PostHog**: 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

### #6. Hermes (Fastest Setup for Startups)
- **Pricing**: Usage-Based · From $29/mo
- **Founder Fit**: 87/100
- **Why Choose Over PostHog**: 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

### #7. Multmetric (Best for Scaling Teams)
- **Pricing**: Paid · From $19/mo
- **Founder Fit**: 84/100
- **Why Choose Over PostHog**: 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

### #8. Kalodata (Best Budget Replacement)
- **Pricing**: Freemium · From $29/mo
- **Founder Fit**: 81/100
- **Why Choose Over PostHog**: 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

## 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.