What Blackfire.io does

Blackfire.io is a Paris-based web observability platform founded in 2014 that provides deterministic profiling, performance monitoring, and automated performance testing for PHP and Python applications. Its core technology instruments function calls to capture time, memory, and network metrics with time-sequence and behavioral visualizations, enabling developers to identify bottlenecks at the function or line-of-code level. The product portfolio spans continuous profiling in production, distributed profiling for microservices, synthetic user monitoring, and CI/CD-integrated performance testing, with framework-specific support for Symfony, Laravel, Magento, Drupal, WordPress, Typo3, and Django. The platform is offered through a self-serve product-led growth motion with free and sponsored open-source access tiers, and is also bundled by default with Upsun (formerly Platform.sh) PHP and Python projects.

Since 2021 Blackfire has operated as a wholly-owned subsidiary of Platform.sh SAS (now doing business as Upsun), expanding its go-to-market through PaaS bundling, authorized resellers, and developer community channels including GitHub, SymfonyConnect, and Upsun's community forum. Revenue is generated through subscription SaaS plans billed monthly or annually, supplemented by paid add-ons such as Debug and Distributed Profiling modules. Customers span eCommerce (GOG.com, NKD.com, Creativestyle), hotel metasearch (Trivago), sales enablement (Showpad), and engineering teams globally, with the company claiming over 1,000 engineering team customers and positioning itself as the leading Web Observability solution in Europe for PHP and Python. Compliance certifications include SOC 2 Type 2, PCI DSS Level 1, and ISO/IEC 27001 (via Upsun), with HIPAA eligibility available only on Upsun.

Name

Blackfire.io

Legal name

Platform.sh SAS doing business as Upsun

Website

https://blackfire.io

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Blackfire.io is a Paris-based PHP and Python observability platform offering deterministic profiling, continuous monitoring, and CI/CD-integrated performance testing. It serves 1,000+ engineering teams globally, bundled by default with parent Upsun's PaaS.

Ownership category

akta.pro rank

Product category

Application Performance Monitoring and Observability

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821), Computer Systems Design Services (541512)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Observability, Monitoring & AIOps (BPAEAKAG)

akta.pro secondary industry

Performance Engineering & Scalability Testing (BPAEAKAK)

Keywords

• PHP performance profiling
• Python performance profiling
• Application observability
• Continuous profiling
• Performance testing

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Subscription SaaS: Cloud-based observability platform offered as subscription service with tiered plans. Provides ongoing revenue through recurring subscriptions with options for monthly or annual billing. Plans include different feature levels and usage limits.
2. Add-ons and Premium Features: Additional add-ons available for purchase beyond base plans, including the Debug add-on mentioned in compliance documentation. Extra environments may be subject to additional fees.
3. Sponsored Open Source Access: Free sponsored access provided to non-commercial open source projects that contribute to the open source community, creating goodwill and community adoption without direct revenue.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels8 records

Core offering

Blackfire.io provides a deterministic code profiling and observability platform for PHP and Python web applications. Its technology collects function-call-level metrics (time, memory, network consumption) to identify performance bottlenecks, supports continuous production profiling, synthetic user monitoring, and CI/CD-integrated performance testing. The platform is offered as a self-serve SaaS subscription and is bundled by default with Upsun (formerly Platform.sh) projects.

Product overview

Blackfire.io is a PHP and Python web observability platform that provides code-level performance profiling, continuous monitoring, and automated performance testing. The product portfolio centers on a core deterministic profiler (available for both PHP and Python) that collects function-call-level metrics to identify bottlenecks. Supporting modules include Performance Monitoring for live production oversight, Continuous Profiling for always-on bottleneck detection, Synthetic User Monitoring for proactive regression testing, and CI/CD Integration for embedding performance tests in development pipelines. Specialized offerings include the Magento Code Profiler with built-in e-commerce metrics, Code Quality and Security Recommendation engines, and distributed profiling for microservices architectures. The platform is offered as part of Upsun (formerly Platform.sh) and includes language-specific SDKs for PHP and Python integration. Blackfire positions itself as the leading web observability solution in Europe, trusted by over 1,000 engineering teams worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• PHP Profiler & Observability Deterministic profiling technology for PHP that collects function-call-level metrics to help developers understand how their PHP code behaves, identify bottlenecks, and optimize performance. For PHP development teams.
• Python Profiler & Observability Deterministic profiling technology for Python that collects function-call-level metrics to help developers understand how their Python code behaves, identify bottlenecks, and optimize performance. For Python development teams.
• Performance Monitoring Live monitoring that tracks server-side response time, memory usage, and application health in production environments with drill-down to code-level insights and alerting. For engineering teams running production PHP and Python applications.
• Continuous Profiling Always-on profiling of production application behavior enabling instant bottleneck detection and continuous performance insight. For engineering teams needing ongoing production observability.
• Synthetic User Monitoring Automated performance testing through scenarios that simulate user behavior to proactively detect performance regressions. For engineering teams wanting to prevent regressions before production.
• CI/CD Integration Capability that integrates Blackfire performance tests into CI/CD pipelines (GitHub Actions, Bitbucket Pipelines, GitLab CI) to prevent performance regressions from being deployed. For DevOps and engineering teams.
• Magento Code Profiler Specialized profiling tool for Magento e-commerce platforms with built-in metrics and default assertions for Magento-specific performance analysis. For e-commerce engineering teams running Magento.

Quantifiable outcome

• 3x load time decrease for Symfony.com
• +2 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration17 records

AI capability4 records

Feature8 records

Partnerships

One partnership is on record.

• Platform.sh (Upsun)coreStrategic or Co-development Partner · 1 January 2021In 2021, Blackfire joined forces with Platform.sh, expanding their mission to provide 360-degree actionable observability. Blackfire is now bundled by default with Upsun PHP and Python projects, with built-in agent and probe installation and automatic server credential configuration. Platform.sh (operating as Upsun) is the parent company entity.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Tideways: Tideways is a PHP-focused application performance monitoring and profiling tool. It is the closest direct competitor to Blackfire, offering similar code-level profiling for PHP applications with comparable targeting of developers and eCommerce (notably Magento).
• Pyroscope (Grafana Pyroscope): Pyroscope is an open-source continuous profiling tool (now part of Grafana Labs) that competes directly with Blackfire's Continuous Profiling product. It supports multiple languages including Python and is positioned as a developer-friendly, low-overhead profiling alternative.
• Scout APM: Scout APM is an application performance monitoring tool with explicit support for PHP and Python, targeting developer teams at SMBs. It competes with Blackfire in the same language niches with a similar self-serve, developer-focused GTM motion.

Broad incumbents

• Datadog: Datadog is a leading cloud observability platform with broad APM, infrastructure monitoring, log management, and — recently — continuous profiling capabilities that compete directly with Blackfire's profiling and monitoring offering. It targets the same engineering buyer but at much broader scope.
• New Relic: New Relic is a long-standing APM and observability platform supporting PHP and Python among many languages. It competes head-to-head with Blackfire's broader product surface (APM, synthetic monitoring, CI/CD integration) and is explicitly positioned as a comparison competitor by Blackfire itself.
• Dynatrace: Dynatrace is an enterprise application performance and observability platform with AI-driven analytics (Davis AI). It competes in the same enterprise APM category as Blackfire but at significantly larger scale, with broader language support and automation capabilities.
• Elastic APM: Elastic APM is the application performance monitoring component of the Elastic Stack, supporting PHP and Python among other languages. It competes with Blackfire by offering profiling and monitoring integrated with logging, search, and security in a single platform.
• AppDynamics: AppDynamics (now part of Cisco) is an enterprise APM platform competing with Datadog, New Relic, and Dynatrace. It targets large enterprises running business-critical PHP, Java, and .NET applications — overlapping with Blackfire's enterprise segment.

Emerging players

• Honeycomb: Honeycomb is a modern observability platform built around high-cardinality event data and distributed tracing. While it focuses more on backend services broadly, it overlaps with Blackfire's performance debugging use cases for engineering teams seeking production observability.
• Sentry: Sentry is a developer-focused error tracking and application monitoring platform that overlaps with Blackfire's developer tooling positioning and self-serve GTM. While Sentry emphasizes error and exception monitoring, it increasingly competes for the same engineering buyer budget.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/blackfireio
• GitHubgithub.com/blackfireio
• YouTubeyoutube.com/playlist?list=PLn5EpEMtxTCmzo7FvJ_webba4VaLhTUVf
• Facebookfacebook.com/Blackfireio
• LinkedInlinkedin.com/company/blackfire-io

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Blackfire.io