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Real-Time Computing

Resources on real-time systems: operating systems with timing guarantees, real-time Java, embedded databases and platforms that analyse data as it arrives.

33 topics•5 categories•Updated October 2026

Real-Time Resource Pages

7 entries

Pages on this site that collect real-time resources.

01Real-time Java: LinksRTSJ, real-time JVMs, low-pause garbage collectors, low-latency libraries and streaming. 02Real-Time Systems: An OverviewDeadlines, hard and soft real-time, scheduling, WCET and safety standards. 03Real-Time Systems & RTOSDirectory of open-source and commercial RTOS, real-time Linux and analysis tools. 04Real-time (RT) Embedded DBMSReal-time and embedded databases: RaimaDB, eXtremeDB, ITTIA DB, SQLite, LMDB, RocksDB and edge time series stores. 05Real-time Data AnalyticsAnalytics and BI platforms, streaming services and real-time OLAP databases such as Druid, Pinot and ClickHouse. 06Real-time Data Analytics PlatformsStream and event processing: Flink, Spark, Kafka Streams, streaming databases and managed cloud services. 07Real User Monitoring ToolsTools for monitoring real user experience.

Real-Time Operating Systems

9 entries

Operating systems with predictable timing.

08FreeRTOSReal-time operating system kernel for microcontrollers. 09Zephyr ProjectOpen-source RTOS for resource-constrained and embedded devices. 10RTEMSReal-time operating system for embedded systems. 11Eclipse ThreadXReal-time operating system, formerly Azure RTOS, now an Eclipse project. 12Apache NuttXReal-time operating system with a focus on standards compliance and small footprint. 13RIOTOpen-source operating system for the Internet of Things. 14VxWorksCommercial RTOS from Wind River. 15RTAIReal-time application interface for Linux. 16OSADLOpen Source Automation Development Lab, which works on real-time Linux.

Real-Time Java

2 entries

Java with predictable timing.

17aicas JamaicaVMReal-time Java virtual machine. 18PTC PercReal-time Java platform from PTC.

Real-Time Data & Databases

9 entries

Analyse and store data as it arrives.

19Apache FlinkStateful computations over data streams. 20MaterializeStreaming database that keeps SQL results up to date. 21RisingWaveStreaming database and stream processing. 22RedisIn-memory data store for real-time applications. 23QuestDBLow-latency time series database. 24InfluxDBTime series database platform. 25SQLiteEmbedded SQL database engine. 26McObject eXtremeDBEmbedded and in-memory database for real-time systems. 27FairComEmbedded and edge database technology.

Related Pages

6 entries

Related directories on this site.

28The Internet of Things (IoT) ParadigmIoT hub. 29Predictive AIMachine learning and AI. 30Database SystemsDatabase systems. 31Service-Oriented ArchitectureSOA resources. 32Computing ParadigmsDirectory of computing paradigms. 33Edge ComputingEdge and fog computing.

Frequently Asked Questions

What is real-time computing?

Computing in which correctness depends on both the result and the time it is delivered. Hard real-time systems must always meet their deadlines, while soft real-time systems tolerate occasional misses.

What is an RTOS?

A real-time operating system schedules tasks with predictable, bounded delays. FreeRTOS, Zephyr and RTEMS are widely used in embedded systems.

How is real-time analytics different?

Real-time analytics processes data as it arrives, usually within seconds, using stream processors and streaming databases. It is not always hard real-time in the formal sense.

What changed on this page?

The earlier page listed eight resources, one of them a link to itself. The seven pages on this site are kept, and external RTOS, real-time Java and data tools were added.

Are the links checked?

External links were checked when this page was updated. The seven resource pages on this site return 200 on the live site, but they are not in the local folder, so they were not rebuilt.