If you're looking for RTI Connext replacement, Temporal is another option worth considering. It's an open-source durable execution platform that helps ensure applications and services complete their work even if they fail. It's designed to work with lots of programming languages, and it's good for a wide range of tasks like order processing and AI. Temporal also offers self-hosted and fully managed serverless options, so you can use it in whatever environment you're most comfortable with.
Another option is InterSystems. It's geared more toward data management products for complex domains, but its powerful platform can be used for enterprise data needs. InterSystems IRIS and IRIS for Health are good for mission-critical work, offering scalable data management and health care focused options. The platform is designed to be interoperable, reliable and scalable, so it's a good choice for industries that need to process data without a hitch.
DataStax is another option worth considering. It's a generative AI stack powered by Astra DB, offering high-performance and highly scalable options for a range of workloads. With features like vector search and support for multiple development environments, DataStax can help developers get production-ready apps up and running quickly. Its pay-as-you-go pricing means you can handle projects of any size, from small to large.
Last, Redis is a real-time data platform that's good for building high-performance, low-latency applications. It supports multiple data models and can be used as a cache, vector search engine or primary NoSQL database. With its community edition and fully managed service, Redis has abundant documentation and tutorials to help developers get their apps running for real-time data processing, so it's a practical choice for high-performance apps.