---
description: View GetApp's list to see the best-rated Open source App Building Software. We provide UK business users free, in-depth and specific guidance on the best software type for their business. Our user-friendly interactive tool allows you to filter by price, features, and reviews.
image: https://gdm-localsites-assets-gfprod.imgix.net/images/getapp/og_logo-94fd2a03a6c7a0e54fc0c9e21a1c0ce9.png
title: Open source App Building Software - Prices & Reviews - GetApp UK 2026
---

Breadcrumb: [Home](/) > [Open Source App Building Software](https://www.getapp.co.uk/directory/653/application-builder/software)

# App Building Software

Canonical: https://www.getapp.co.uk/directory/653/application-builder/software

> App Building Software is a digital tool that enables organisations to design and code their own applications, either for in-house use or for open market distribution through app stores. From qualified app developers to uninitiated professionals with a broad range of skills and backgrounds in programming, anyone can use this type of software to generate, test, and deploy their apps via drag-and-drop templates and even spreadsheet uploads. App making software is used by businesses of every type and size, including estate agencies, marketing companies, gyms, casinos, restaurants, retailers, maintenance operations, educational institutions, insurance companies, investment firms, NGOs, and religious organisations. With application building software, businesses can design software that facilitates food ordering, appointment scheduling, push notifications, mobile shopping carts, and data entry. They can do so via custom, no-code apps that run on mobile devices, game consoles, smart TVs, smartwatches, and other devices. App builder software can also track engagement, development progress, conversion rates, and user activity, thanks to built-in reports. They benefit businesses by enabling them to put their own stamp on their apps whilst helping to publish them on a variety of platforms. Some such tools offer complete control over their deployment and the tools they incorporate. Typical features of application building software include a graphical user interface with drag \& drop functionalities, customisable templates for code-free programming, workflow management, and third-party integrations. App Building Software is very similar in functionality to App Design Software and App Development Software. As they help streamline project management, it could also be said that they resemble Forms Automation Software and Workflow Management Software. Check out GetApp's different listings of web application builder software, including UK hosted app builder for SMEs. GetApp also features a range of free app building software options.

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## Products

1. [OutSystems](https://www.getapp.co.uk/software/9372/outsystems) — 4.6/5 (372 reviews) — Low code development platform to create apps using AI
2. [Baserow](https://www.getapp.co.uk/software/2066462/baserow) — 4.7/5 (69 reviews) — Build apps, databases, automations and AI agents — no code.
3. [Directus](https://www.getapp.co.uk/software/2030875/directus) — 4.5/5 (60 reviews) — An Open Data Platform for managing headless content.
4. [Ionic](https://www.getapp.co.uk/software/2056178/ionic) — 4.7/5 (31 reviews) — The enterprise mobile SDK and Superapp SDK
5. [Axelor](https://www.getapp.co.uk/software/119559/axelor) — 4.7/5 (27 reviews) — Cloud-based ERP solution for small to midsize businesses
6. [Joget DX](https://www.getapp.co.uk/software/103481/joget-workflow) — 4.2/5 (22 reviews) — Create Enterprise Applications @ The Speed of Thought
7. [Simplifier](https://www.getapp.co.uk/software/126579/simplifier) — 4.5/5 (21 reviews) — Low-code platform to build business applications with ease
8. [Draftbit](https://www.getapp.co.uk/software/2054606/draftbit) — 4.3/5 (21 reviews) — Open-source React Native visual builder with Expo built-in
9. [Theta](https://www.getapp.co.uk/software/2075277/theta) — 4.8/5 (18 reviews) — Software for designing, prototyping and testing UI
10. [Flowable](https://www.getapp.co.uk/software/2076570/flowable) — 4.5/5 (13 reviews) — Process Orchestration \& Automation with AgenticAI
11. [Tangle](https://www.getapp.co.uk/software/2069464/tangle) — 4.9/5 (7 reviews) — The Smart ERP with Superpowers
12. [Convertigo](https://www.getapp.co.uk/software/2058960/convertigo) — 4.0/5 (4 reviews) — Low code platform that limits the vendor lock-In effect
13. [Swiftspeed Appcreator](https://www.getapp.co.uk/software/2063324/swiftspeed-appcreator) — 4.5/5 (2 reviews) — App building software
14. [formsflow.ai](https://www.getapp.co.uk/software/2061556/formsflow-ai) — 4.0/5 (1 reviews) — Low Code Platform to build forms, workflows, and automations
15. [CommCare](https://www.getapp.co.uk/software/2072654/commcare) — 5.0/5 (1 reviews) — The digital platform for impactful frontline work everywhere
16. [SaaS Boilerplate](https://www.getapp.co.uk/software/2061538/saas-boilerplate) (0 reviews) — SaaS Boilerplate reduces costs of saas products development
17. [Cloud-Inject](https://www.getapp.co.uk/software/2071107/cloud-inject) (0 reviews) — Observability software
18. [ToolJet](https://www.getapp.co.uk/software/2077591/tooljet) (0 reviews) — Low-code development solution for IT professionals.
19. [BM4A EQS](https://www.getapp.co.uk/software/2079327/bm4a-eqs) (0 reviews) — Repid web application development solution for Enterprise

## Related Categories

- [Platform as a Service Software](https://www.getapp.co.uk/directory/352/platform-as-a-service-paas/software)
- [App Design Software](https://www.getapp.co.uk/directory/1325/app-design/software)
- [No Code Platform Software](https://www.getapp.co.uk/directory/2711/no-code-platform/software)
- [Workflow Management Software](https://www.getapp.co.uk/directory/566/business-workflow/software)
- [ALM Software](https://www.getapp.co.uk/directory/269/application-lifecycle-management/software)

## Links

- [View on GetApp](https://www.getapp.co.uk/directory/653/application-builder/software)
- [All Categories](https://www.getapp.co.uk/directory)

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