# Middleware vs Rerun Middleware records 35,967 monthly visits with -12.3% month-over-month growth and Freemium, Contact for Pricing pricing. Rerun records 54,018 monthly visits with -23.7% growth and Free pricing. | Metric | [Middleware](https://openaitools.app/tool/middleware) | [Rerun](https://openaitools.app/tool/rerun) | | :--- | :--- | :--- | | Website URL | https://middleware.io | https://rerun.io | | Categories | AI Monitor, Log Management, Large Language Models (LLMs) | AI Developer Tools, Log Management, AI For Data Analytics, AI Monitor | | Pricing Model | Freemium, Contact for Pricing | Free | | Monthly Visits | 35,967 | 54,018 | | MoM Growth Rate | -12.3% | -23.7% | | Primary Market | India | United States | | Direct Visits | 8,884 | 24,880 | | Review Score | 4.3 | 4.6 | | Saved Count | 1 | 1 | | Supported Platforms | Website | Website | ## Middleware Middleware consolidates the observability signals that usually live in separate tools. Infrastructure monitoring covers servers, containers, serverless functions and managed cloud services across AWS, Azure, GCP and Kubernetes. APM tracks application performance and traces slow requests down to the code path, while log monitoring with AI-assisted search makes it practical to debug high-volume log streams. Real user monitoring and synthetic monitoring add the outside-in view of how actual users and test probes experience the product. What differentiates the platform is OpsAI, an AI SRE agent that not only detects anomalies but correlates them across signals and proposes remediation. The vendor cites customers reducing debugging and resolution time dramatically, and positions the agent as helping fix problems in production rather than simply paging an engineer. LLM observability extends the same idea to AI applications, letting teams monitor and evaluate model calls in production. Operationally, Middleware provides a unified dashboard, alerting, a query language, notebooks, session replay, error tracking and continuous profiling, plus SLO monitoring. It integrates with the common cloud and Kubernetes environments and is presented as an alternative to Datadog, New Relic, Dynatrace, Grafana and Coralogix. A free tier makes it easy to start, with paid and enterprise plans for larger data volumes and support needs. **Pricing & Plans:** Free tier to get started, with paid plans and enterprise pricing available on request. - **OpsAI SRE Agent:** An AI agent that detects, investigates, and helps auto-fix production issues across infrastructure, APM and RUM signals. - **Unified infrastructure monitoring:** Monitor servers, containers, serverless workloads and cloud services across AWS, Azure, GCP and Kubernetes from one place. - **Log monitoring with AI insights:** Correlate and query high-volume logs assisted by AI so debugging does not rely on manual grep-style detective work. - **APM and distributed tracing:** Track application performance, trace slow requests, and inspect database and endpoint behaviour end to end. - **LLM observability:** Monitor and evaluate LLM application calls, latency, cost and quality alongside your traditional stack telemetry. **Strengths:** Single platform for infra, APM, logs, RUM and LLM observability; AI SRE agent aims at remediation, not just alerting; Free tier available to evaluate before committing; Explicitly positioned as an alternative to major legacy vendors **Limitations:** Full pricing for larger deployments requires contacting sales; Breadth of features can mean a longer initial setup; Advanced AI agent capabilities may vary by plan [Profile (Markdown)](https://openaitools.app/tool/middleware.md) ## Rerun Rerun is an open-source SDK and visualizer built for multi-rate, multimodal data, and it markets itself as the data layer for physical AI. Engineers use it to log sensor streams, computer-vision outputs, 3D transforms, and time-series metrics from the first recording through to large-scale review. Because it is a flexible framework rather than a locked platform, teams can extend the viewer with their own views and tools at each stage of the pipeline. The SDK ships with Python, Rust, and C++ APIs, so it fits into existing robotics and perception stacks without a rewrite. Data is stored as column-chunks in rrd files, which supports full dataframe or SQL queries over any recording, down into the columns, time ranges, and values inside it rather than only metadata. Beyond the free tooling, Rerun offers Rerun Hub, a production backend that catalogs recordings, indexes byte ranges, and turns object stores into a queryable, streamable foundation. Hub supports running transforms on the edge or close to the data and streaming datasets directly to GPUs for training without an export step. **Pricing & Plans:** The Rerun SDK and viewer are open source and free to use. Rerun also offers Rerun Hub, a production backend, whose pricing is arranged separately with the team. Check the Rerun website and GitHub repository for current terms. - **Multimodal data visualization:** Log, store, and view images, point clouds, 3D transforms, and time series together in one viewer. - **Open-source logging SDK:** Record multi-rate, multimodal data as column-chunks in rrd files, or convert from other formats. - **Query and transform:** Run full dataframe or SQL queries over robotics data, down into columns, time ranges, and values. - **Edge and stream transforms:** Add derived columns and evolve schemas without breaking history, on the edge or near the data. - **Rerun Hub backend:** A hosted backend with catalog, byte-range indexing, and retrieval that turns object stores into a queryable dataset. **Strengths:** Open-source core with permissive use across research and production; Handles multimodal and multi-rate data in one viewer; APIs for Python, Rust, and C++; Query and transform data without an export step **Limitations:** Requires coding in Rust, Python, or C++ to get full value; The hosted Rerun Hub backend is a newer, additional product beyond the free SDK; Visualization work is aimed at engineering teams, not general business users; Advanced production features assume existing logging pipelines [Profile (Markdown)](https://openaitools.app/tool/rerun.md) ## Frequently Asked Questions ### How do Middleware and Rerun compare in monthly traffic? Middleware has 35,967 monthly visits, while Rerun has 54,018. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? Middleware has a month-over-month growth rate of -12.3%; Rerun has -23.7%. ### How does pricing compare? Middleware: Freemium, Contact for Pricing. Free tier to get started, with paid plans and enterprise pricing available on request. Rerun: Free. The Rerun SDK and viewer are open source and free to use. Rerun also offers Rerun Hub, a production backend, whose pricing is arranged separately with the team. Check the Rerun website and GitHub repository for current terms. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Datadog](https://openaitools.app/tool/datadog) | 5,175,760 | -4.8% | Freemium, Free Trial, Paid, Contact for Pricing, Free | Unified observability, security and incident response for cloud-scale engineering teams | [.md](https://openaitools.app/tool/datadog.md) | | 2 | [Weights & Biases (CoreWeave Forge)](https://openaitools.app/tool/prompts) | 315,624 | -80.2% | Freemium, Contact for Pricing, Free | Track, evaluate, and ship AI models and agents in one connected environment. | [.md](https://openaitools.app/tool/prompts.md) | | 3 | [Arize AI](https://openaitools.app/tool/arize-com) | 249,028 | +3.2% | Paid, Contact for Pricing | Agent observability, evaluation, and continuous improvement for production AI | [.md](https://openaitools.app/tool/arize-com.md) | | 4 | [Encord](https://openaitools.app/tool/encord-com) | 244,204 | +9.4% | Contact for Pricing | The multimodal data layer for computer vision and physical AI teams | [.md](https://openaitools.app/tool/encord-com.md) | | 5 | [Label Studio](https://openaitools.app/tool/label-studio) | 137,199 | -16.1% | Contact for Pricing, Free | Label any data. Evaluate any AI. | [.md](https://openaitools.app/tool/label-studio.md) | | 6 | [Future AGI](https://openaitools.app/tool/future-agi) | 121,741 | -7.8% | Freemium, Usage-based | Build, simulate, evaluate and monitor self-improving AI agents | [.md](https://openaitools.app/tool/future-agi.md) | | 7 | [Maxim AI](https://openaitools.app/tool/maxim-ai) | 121,351 | +10% | Contact for Pricing, Free Open Source | Evaluate, monitor, and govern your AI applications in production | [.md](https://openaitools.app/tool/maxim-ai.md) | | 8 | [Voxel51](https://openaitools.app/tool/voxel51-com) | 117,715 | -8.2% | Contact for Pricing | Find where your physical AI models fail, then fix the data. | [.md](https://openaitools.app/tool/voxel51-com.md) | | 9 | [PromptLayer](https://openaitools.app/tool/promptlayer) | 85,899 | -4.6% | Free Trial, Contact for Pricing | The collaboration layer for AI engineering teams | [.md](https://openaitools.app/tool/promptlayer.md) | | 10 | [Confident AI](https://openaitools.app/tool/confident-ai) | 83,400 | -3.3% | Freemium, Paid, Contact for Pricing | Standardize LLM evaluation, observability, and red teaming across your whole org | [.md](https://openaitools.app/tool/confident-ai.md) | --- Source: https://openaitools.app/compare/middleware-vs-rerun More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)