Paragon is an Embedded iPaaS that lets developers add multiple SaaS services to their products without a lot of engineering. It's got native integration to a large catalog of pre-built connectors, a custom integration builder for any 3rd-party API, and serverless workflows that can be built with either visual low-code or code. Paragon supports more than 100 integrations and is geared for developers building Next.js, React and Vue apps.
Pipedream is another powerful option for building complex apps spanning your stack of services. It's got more than 2,100 APIs through npm and PyPI packages, so integration is easy. Pipedream supports a lot of APIs, including OpenAI, Salesforce and Microsoft Teams, and offers instant deployment and low-level code control when you need it, along with no-code interfaces for ease of use.
Mindware is geared for connecting modern and legacy software, reducing the complexity of coding and configuration. It supports integration with many public and private API services, and authentication is easy with an API key. Mindware's tiered pricing is relatively cheap, so it's a good option for casual developers and businesses.
If you want to manage integrations programmatically but without having to write code, Klamp is a good option. It lets you build, customize and manage integrations with a pre-built marketplace embedment into a SaaS product. Klamp features include workflow automation, customizable layouts and platform intelligence for monitoring API health, so you can get started quickly with minimal IT involvement.