Counted from the Cargo.toml manifests of the 53 indexed repositories that declare rdkafka as a dependency — not download counts. Dependency data last verified 2026-08-09.
Crates that show up unusually often in rdkafka projects. The most distinctive pairings rank first — crates these projects use far more than the average indexed Rust project does, not just crates that are popular everywhere. Each percentage is the share of rdkafka projects that also use it.
Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation
A high-performance observability data pipeline.
📊 Cube Core is open-source semantic layer for AI, BI and embedded analytics
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.
Event streaming platform for agentic AI. Continuously ingest, transform, and serve event streams in real time, at scale.
The live data layer for apps and AI agents. Create up-to-the-second views into your business, just using SQL
Distributed stream processing engine in Rust
Restate is the platform for building resilient applications that tolerate all infrastructure faults w/o the need for a PhD.
The open source and enterprise-ready webhooks service 🦀
A portable accelerated SQL query, search, and LLM-inference engine, written in Rust, for data-grounded AI apps and agents.
Macro is a unified interface for email, messages, tasks, calls, agents, pull requests, docs, crm — linked together with shared AI memory.
Kubernetes-native platform to run massively parallel data/streaming jobs
Parseable is an observability datalake built from first principles.
The Modrinth monorepo containing all code which powers Modrinth!
The Feldera Incremental Computation Engine
The Auron accelerator for distributed computing framework (e.g., Spark) leverages native vectorized execution to accelerate query processing
Communication infrastructure for the AI era — one binary, one broker, one storage layer, any protocol
Lakekeeper is an Apache-Licensed, secure, fast and easy to use Apache Iceberg REST Catalog written in Rust.
One library | Many payment processors | Scale to multiple processors with few lines of code.
High performance Rust stream processing engine seamlessly integrates AI capabilities, providing powerful real-time data processing and intelligent analysis.
Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights
ChirpStack open-source LoRaWAN Network Server
🌊 Continuously synchronize the systems where your data lives, to the systems where you _want_ it to live, by managing your data flows with Estuary. 🌊
Blazingly fast pusher drop-in replacement written in rust
Fast, streaming indexing, query, and agentic LLM applications in Rust
A no-code or framework to build blazing fast EVM indexers - built in rust.
ApeCloud's Data Transfer Suite, written in Rust. Provides ultra-fast data replication between MySQL, PostgreSQL, Redis, MongoDB, Kafka and ClickHouse, ideal for disaster recovery (DR) and migration scenarios.
The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments.
Sentry event forwarding and ingestion service.
Async runtime for Rust where correctness is structural: region-owned tasks, cancel-correct protocols, capability-gated effects, and deterministic replay testing
Solana program parsing toolkit
graph based stream processing framework
Document, columnar, KV, Graph, Vector, Array - The only all-in-one database that you need.
Apache SkyWalking PHP Agent
A free, cross-platform Minecraft launcher
An EVM compatible ledger with a focus on performance and observability. Suited for in house use.
Real-time data processing/feature engineering tailored for modern AI/ML systems.
A collection of network related libraries that includes protocol parsers and daemons
Blocksense Network's Monorepo
High-performance, DSL-free stream processing
A Package Manager for high velocity software environments, built on spfs.
Drop-in Acceleration of SQL/PromQL queries
Open-source streaming SQL engine written in Rust using Apache Arrow and DataFusion. Supports continuous queries, temporal stream joins, tumbling/session windows, and CDC/Kafka connectors. Lightweight, embeddable, and sub-microsecond latency
Rewrite of indexer-service in Rust with TAP payments implementation
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A high-performance, secure, and cross-platform modules optimized for efficiency, scalability, and reliability.