Best Application Development Software (2026): Top 10 Compared

OutSystems is a low-code platform that the vendor now markets as an agentic systems platform for building AI agents and applications for employees, customers and partners. Its pricing page groups the offer into the main platform, optional add-ons and a free Personal Edition for learning.

The paid platform includes 8x5 professional support, development, non-production and production runtimes, a 99.5% uptime guarantee on OutSystems Cloud and ISO 27001 compliance. Add-ons extend this to 24x7 support, 99.95% uptime, extra runtimes, SOC 2 Type II and PCI DSS compliance, mobile app shielding and more end users. Deployment options include OutSystems' fully managed cloud, on-premises installation, private cloud and sovereign or regulated cloud.

The licence is measured in Application Objects, which count screens, database tables and API methods across all apps, together with non-anonymous end users. OutSystems states that its generated code is based on widely used frameworks, so applications can be extended outside the platform. Use cases listed on the site include citizen portals, mobile banking, claims management, field service and internal case management.

Mendix is a low-code platform that is part of Siemens. Its pricing page offers three packages, Free, Standard and Premium, each sold either as a One App plan or an Unlimited Apps plan. Mendix states there is no technical difference between the two plan types; the One App plan is a lower entry point for a single large application such as a customer, employee or supplier portal.

Free covers agile project management and collaborative multi-user development in one IDE and deploys to Mendix Cloud. Standard adds a project dashboard, up to three environments per app, an operations dashboard, identity provider integration, vertical scaling, 9-to-5 support and a 99.5% uptime guarantee. Premium adds flexible environments, horizontal scaling, high availability, multi-region failover, a private marketplace, 24/7 support and 99.95% uptime.

Mendix does not charge for anonymous users or for developers, and offers lower pricing for external users of B2B or B2C portals. Independent software vendors building commercial products are offered a separate royalty-based ISV programme. Mendix can also be bought through the AWS Marketplace.

Microsoft Power Apps is the low-code app builder in Microsoft Power Platform, alongside Power Automate, Power Pages and Copilot Studio. It builds canvas and model-driven apps that store data in Microsoft Dataverse and connect to other sources through standard, premium and custom connectors.

The pricing page lists three ways to license. The free Developer Plan lets makers build and test unlimited apps and flows in developer environments, but production users need a paid licence. Power Apps Premium is a per-user licence that runs unlimited apps and pages, includes premium and on-premises connectors and unlimited flows within the app context. A pay-as-you-go option billed through Azure suits variable or seasonal use. Dataverse capacity is pooled at the tenant level, and extra database, file and log capacity can be bought per GB.

Microsoft states there is no technical limit on users or apps per environment. Agentic features are available in model-driven apps, and Microsoft 365 Copilot Chat is generally available in model-driven apps and in preview for canvas apps. Templates cover help desk, onboarding, asset checkout, site inspection and budget tracking.

Oracle APEX is a low-code development platform built into Oracle Database. Applications are built with low-code tools and run inside the database, which gives them the database's security, performance, scale and availability features. Oracle positions it for feature-rich, mission-critical applications that are easy to maintain.

Oracle describes APEX as a no-cost feature of Oracle Autonomous AI Database and every other Oracle AI Database distribution. On Oracle Cloud it is sold as APEX Application Development, also called APEX Service, with elastic pay-per-use pricing, no per-user fees and a free tier. The cost of an APEX application is therefore mostly the cost of the database it runs on.

The product page lists AI-assisted development using generative AI and natural language, REST data access for consuming external services, and a gallery of starter apps, sample code and plug-ins. Oracle cites customer stories from Nomura Research Institute, which reported a 65% reduction in development effort, and Syneos Health, which built a clinical project management platform on APEX. Training, certification, documentation and regular office-hours sessions are available.

Quickbase is a no-code application platform for building operational apps such as project trackers, shop floor management, contract management, maintenance management and safety audits. The site groups solutions by industry, with construction, manufacturing, government and solar named, and also sells Pave, an AI app building product, and FastField, a mobile forms product.

Three plans are listed. Team includes personalised dashboards, more than 13 report types, communication and file management integrations, workflow automation, user and data security controls, encryption and audit logs. Business adds single sign-on, SCIM provisioning, Gantt charts, a sandbox, solution environments and FDA and HIPAA compliance. Enterprise adds advanced performance tools, advanced data encryption, on-premises connectivity and data warehouse integrations.

Quickbase's help documentation explains that pricing is based on an entitlement called reads. On user-based plans only integration reads count; on usage-based plans both user and integration reads count. Quickbase states that workflows are not stopped when the limit is reached; the account team contacts the customer about more entitlements.

Google AppSheet is a no-code app builder that turns data in spreadsheets, cloud file storage and databases into mobile and web applications. Apps can show tables, galleries, charts, maps and dashboards, capture data with forms, checklists, locations, signatures and photos, and run offline with background sync.

The pricing page lists three paid plans. Starter covers basic app and automation features, spreadsheet and file storage connectors and the AppSheet database. Core adds barcode scanning and NFC, scheduled and event-driven automations and webhooks, role-based security filters, on-device encryption and email support. Enterprise Plus adds connectors for Salesforce, OpenAPI services, REST APIs, Apigee and BigQuery, Active Directory, Okta and OpenID Connect sign-in, machine learning models, app version history, audit logs and governance controls, with AppSheet database limits rising from 2,500 rows to 200,000 rows per database.

Enterprise Plus is bought by a Google Workspace administrator; organisations without Workspace can create an administrator account through Cloud Identity. AI-assisted app creation is available to users with paid Google Workspace licences.

Retool is a platform for building internal software: admin panels, dashboards, operational tools and automated workflows that read and write company databases and APIs. Pricing distinguishes builders, defined as users who created or edited an app or workflow in the billing cycle, from internal users who only use the apps.

Four plans are listed. Free covers up to five users on Retool Cloud in a production environment. Team adds unlimited users and staging plus production environments. Business adds unlimited environments, external users and embedded apps, audit logs and rich permissions. Enterprise adds unlimited external users, audit log streaming, granular roles, Git source control, SSO, SCIM, two-factor authentication, up to six instances and the option to bring an organisation's own AI provider key.

Each plan includes a pool of AI credits shared across the account for app building and AI Actions, renewing monthly without rollover, and additional packs can be bought on paid plans. Enterprise customers can run Retool in Retool's cloud, self-hosted or in an air-gapped environment.

Caspio is a low-code platform for building database-driven business applications for internal or external users. Its visual builder creates forms, reports, charts and calendars, and applications can be hosted by Caspio or embedded in an organisation's own website, CMS or portal.

The pricing page lists Team, Business and Enterprise plans, all with unlimited app users. Team targets teams with automation and compliance needs; Business targets high-volume, multi-team applications; Enterprise adds full governance, security and guaranteed performance. Features include styling templates and 11 built-in languages, location-based distance search, pivot tables with drilldown, credit-based SMS, Stripe and PayPal payment processing, revision history and a content delivery network for files.

AI capabilities include Caspi, an AI app builder that creates tables and designs apps, a chat agent that answers signed-in users' questions about app data within their permissions, AI workflows, and an MCP server that connects a Caspio account to assistants such as ChatGPT and Claude. Identity features cover directories, two-factor authentication and SAML single sign-on. Caspio also sells HIPAA and Compliance editions for regulated data.

Budibase is an open-source low-code platform for internal applications. It combines an app builder for end-user web apps, an automation builder for backend workflows, an agent builder for AI agents with tools and knowledge sources, a built-in database and connectors to external data sources.

Budibase offers two hosting routes. The free open-source edition is self-hosted on the customer's own infrastructure, with one workspace, unlimited apps, automations, agents and users, SSO and community support. Budibase Cloud plans are metered by automation actions. Pro includes one creator, 2,000 AI credits and one workspace. Premium adds 10 workspaces, custom branding, backups and SSO. Business includes three creators, 50,000 AI credits, unlimited workspaces, environment variables, enforced SSO, user groups and email support.

Enterprise is available in the cloud or self-hosted and adds Active Directory and SCIM, 365-day logs, audit logs, priority support with SLAs and micro frontends. Air-gapped deployment and onboarding are listed as Enterprise add-ons. Budibase lets teams bring their own AI provider keys for agents.

Kissflow is a low-code and no-code platform aimed at enterprise operations. Its low-code page describes a drag-and-drop application builder, visual workflow modelling, prebuilt industry applications, integrations with CRM, ERP and communication tools, and analytics. Kissflow positions the platform for both IT teams clearing application backlogs and citizen developers building their own solutions under central governance.

Example solutions listed on the site include procure-to-pay, retail store operations, new product development, vendor and customer portals, oil and gas shutdown and turnaround, insurance claims processing, hire-to-retire and enterprise service management. The company also markets migration paths from Microsoft Power Apps and Lotus Notes.

The pricing page does not publish plans or figures. It states that prices are set around the value delivered, sold as fixed annual agreements, with no surcharges for AI or API usage. Kissflow says more than 10,000 companies use the platform and cites a Nucleus Research ROI study, both vendor claims.