Apache Santuario Alternatives (September 2025)

2.
Apache Marmotta - Home
https://marmotta.apach
.org/

Apache Marmotta - An Open Platform for Linked Data - Home

3.
Apache Arrow | Apache Arrow
https://arrow.apach
.org/

A cross-language development platform for in-memory analytics

4.
Apache TomEE
https://tomee.apach
.org/

Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling.

6.
Apache OODT - Distributed Data Management
https://oodt.apach
.org/

Apache Object Oriented Data Technology (OODT) is the smart way to integrate and archive your processes, your data, and its metadata. It facilitates the generation, processing, management, distribution, analysis of data management, data archiving, and data analytics systems allowing for the integration of data, computation, visualization and other components.

7.
Apache ServiceComb
https://servicecomb.apach
.org/

Open-Source, Full-Stack Microservice Solution.With out of the box, high performance, compatible with popular ecology, multi-language support Get started

8.
Apache CloudStack | Apache CloudStack
https://cloudstack.apach
.org/

Apache CloudStack is an opensource infrastructure-as-a-service cloud computing platform that is easy to use, turnkey, highly available and highly scalable.

9.
Apache Apex
https://apex.apach
.org/

Apex is an enterprise grade native YARN big data-in-motion platform that unifies stream processing as well as batch processing.

13.
Apache Usergrid — the BaaS not made for Hipsters
https://usergrid.apach
.org/

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

15.
The Community for Open Collaboration and Innovation | The Eclipse Foundation
https://www.eclips
.org/

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

16.
Red Hat JBoss Enterprise Application Platform (JBoss EAP)
https://www.redha
.com/en/technologies/jboss-middleware/application-platform/

An open source Java EE 8-compliant application server that lets you build Java applications once and deploy them everywhere.

17.
The Community for Open Collaboration and Innovation | The Eclipse Foundation
https://iot.eclips
.org/

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

18.
Apache Answer | Free Open-source Q&A Platform
https://answer.apach
.org/

A Q&A platform software for teams at any scale. Whether it’s a community forum, help center, or knowledge management platform, you can always count on Answer.

19.
Spark SQL & DataFrames | Apache Spark
https://spark.apach
.org/sql/

Spark SQL is Spark's module for working with structured data, either within Spark programs or through standard JDBC and ODBC connectors.

20.
eSignature API – Secure & Reliable Electronic Signatures
https://eversig
.com/api/

Easily integrate electronic signatures into your apps and workflows with our secure, simple, and fast eSignature REST API. Create a free sandbox today.

21.
Apache Beam®
https://beam.apach
.org/

Apache Beam is an open source, unified model and set of language-specific SDKs for defining and executing data processing workflows, and also data ingestion and integration flows, supporting Enterprise Integration Patterns (EIPs) and Domain Specific Languages (DSLs). Dataflow pipelines simplify the mechanics of large-scale batch and streaming data processing and can run on a number of runtimes like Apache Flink, Apache Spark, and Google Cloud Dataflow (a cloud service). Beam also brings DSL in different languages, allowing users to easily implement their data integration processes.

24.
Spark NLP - State of the Art NLP Library for Large Language Models (LLMs)
https://sparknl
.org/

Experience the power of Large Language Models like never before! Unleash the full potential of Natural Language Processing with Spark NLP, the open-source library that delivers scalable LLMs

25.
DHTMLX JS Library | JavaScript/HTML5 UI Framework | JavaScript UI Library
https://dhtml
.com/

DHTMLX UI libraries are pure JavaScript/HTML5 client-side widgets for high-speed web and mobile development. They are easily customizable and configurable via API.

26.
Open Source, Fully Supported OpenJDK | Azul Platform Core
https://www.azu
.com/products/core/

Get the world's best supported build of OpenJDK with Azul. See how Azul Platform Core can help you deliver secure & stable Java with 90% lower licensing costs.

27.
API Documentation & Design Tools for Teams | Swagger
https://swagge
.io/

Simplify API development for users, teams, and enterprises with our open source and professional toolset. Find out how Swagger can help you and get started today.

28.
Payara Services Ltd – devoted to Open Source, Java, our customers and the community
https://www.payar
.fish/

Payara Server is fully supported, developer-friendly, open source application server. Innovative, cloud-native, optimized for production deployments.

30.
Eclipse Hudson | projects.eclipse.org
https://projects.eclips
.org/projects/technology.hudson/

Eclipse Hudson is a continuous integration (CI) tool written in Java, which runs in a servlet container, such as Apache Tomcat or the GlassFish application server.

31.
Software Licensing and Distribution API - Keygen
https://keyge
.sh/

Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in C++, C#, Swift, Java, Kotlin, Node and more.

32.
API Management Platform & API Gateway | Tyk.io
https://ty
.io/

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

33.
Delphi SSH, SFTP, FTPS, SSL, HTTP/HTTPS, WebSocket and SignalR Client and Server
https://www.devar
.com/sbridge/

SecureBridge offers Delphi SSH, SFTP, FTPS, SSL, HTTP/HTTPS, WebSocket, and SignalR security and data protection components to protect TCP traffic from unauthorized access.

35.
Klocwork for C, C++, C#, Java, JavaScript, Python, Kotlin | Perforce
https://help.klocwor
.com/

Klocwork is a static code analysis and SAST tool. This tool for C++, C#, Python, Kotlin JavaScript, and Java static code analyzer identifies software security, quality, and reliability issues helping to enforce compliance with standards.

36.
VeraCrypt - Free Open source disk encryption with strong security for the Paranoid
https://www.veracryp
.fr/

VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files.

37.
SendSafely | The End-to-End Encryption Platform
https://www.sendsafel
.com/

SendSafely lets you easily exchange encrypted files and information with anyone on any device. Let us take the headache out of secure file exchange.

38.
Project Jupyter | Home
https://jupyte
.org/

The Jupyter Notebook is a web-based interactive computing platform. The notebook combines live code, equations, narrative text, visualizations, interactive dashboards and other media.

39.
OpenJDK Download - Corretto - AWS
https://aws.amazo
.com/corretto/

Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with no-cost long-term support. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard.

40.
The Leading PDF Library for Developers | iText
https://itextpd
.com/

The leading Java and C# PDF Library SDK. A programmable Java and .NET PDF SDK library to create, manipulate and edit PDF documents. Convert Html files to pdf, Debug pdf files, extract data from PDF and more.

42.
File Format & Document Solutions for Developers and No-Coders | products.aspose.com
https://products.aspos
.com/total/

Build document manipulation applications using High Code or Low Code APIs, or simply use cross-platform apps to view, compare, inspect or convert 100+ file formats. Explore Aspose, the leading provider of document processing APIs and software solutions.

43.
Free Currency Conversion and Forex Exchange Rate API
https://currencyfreak
.com/

Free Currency Conversion API and Forex Exchange Rates data through REST API in JSON and XML format.

47.
Secure File Transfer & Sharing – EnterpriseDT
https://enterprised
.com/

EnterpriseDT offers secure, robust, and cost-effective secure file transfer solutions encompassing both SFTP and MFT protocols. This includes CompleteFTP and CompleteFTP Enterprise MFT products specifically tailored for Windows platform.

48.
Data Fetcher | API Connector for Airtable
https://datafetche
.com/

Connect Airtable to any application with no-code using the Data Fetcher Airtable extension. Fetch data from any API into Airtable.

49.
Accusoft PrizmDoc® for Java | High Speed Viewing
https://www.accusof
.com/products/virtualviewer/virtual-viewer-features-high-speed-viewing/

PrizmDoc® for Java delivers high speed viewing capabilities for large and complex documents including PDF, Word, Excel and more.

50.
The Platform Powering the API World | Kong Inc.
https://kongh
.com/

Kong is the most widely adopted API gateway and service mesh, powering the world’s APIs for modern architectures. Accelerate development and productivity today!

52.
CodeSonar Static Application Security Testing (SAST) Software Tool | CodeSecure
https://codesecur
.com/our-products/codesonar/

CodeSonar is a leader in Static Application Security Testing, delivering multi-language SAST capabilities for enterprises where software quality and software security matter.

53.
Buy SSL from a Leading Certificate Authority | Thawte®
https://www.thawt
.com/

Premium protection from a trusted certificate authority. Find the SSL certificate that's right for your site, including Wildcard, SSL123 and server certs.

54.
Android Obfuscation and Java Security with DashO
https://www.preemptiv
.com/products/dasho/

DashO is PreEmptive’s innovative approach to Java security and app hardening for Android applications. Learn more about this robust security tool.

56.
Home - PHEMI Systems - Data Privacy Management System
https://www.phem
.com/

NSA-grade privacy, security, governance, and data management system for Azure. Control access to health data at scale.

57.
Confluent | Apache Kafka® Reinvented for the Cloud
https://www.confluen
.io/

Confluent makes it easy to connect your apps, data systems, and entire business with secure, scalable, fully managed Kafka and real-time data streaming, processing, and analytics.

58.
Home - AllegroGraph
https://allegrograp
.com/

Discover AllegroGraph, the leading Knowledge Graph Platform integrating Neuro-symbolic AI for advanced data analytics and intelligent decision-making. Enhance your data insights with third wave AI technology.

59.
libGDX - libGDX
https://libgd
.com/

libGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS.

60.
Data extraction from Forms, Invoices, Documents via ABBYY FlexiCapture SDK
https://www.abby
.com/flexicapture-sdk/

Data extraction enabled by flexible ABBYY FlexiCapture SDK integration, allows you to maintain full control over document processing, data capture & document routing.

63.
Doc-O-Matic - Source Code Documentation and Help Authoring Tool
https://www.doc-o-mati
.com/

Doc-O-Matic is a software source code documentation and Help authoring tool. It takes source code and comments, adds conceptual topics and external input and produces documentation from it. With its single-source approach it generates many different kinds of output from a single documentation base.

64.
Oracle Berkeley DB
https://www.oracl
.com/database/technologies/related/berkeleydb.html/

The Oracle Berkeley DB family of open source, embeddable databases provides developers with fast, reliable, local persistence with zero administration. Often deployed as an 'edge' database, Oracle Berkeley DB provides very high performance, reliability, scalability, and availability for application use cases that do not require SQL

65.
Base64.ai: Automatically process all document types
https://base6
.ai/

Extract OCR text, data, handwriting, photos, and signatures from all types of documents, including IDs, driver licenses, passports, visas, receipts, invoices, forms, and thousands of other document types worldwide.

66.
Gravitee.io - Full-lifecycle API Management
https://www.gravite
.io/

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

67.
Platform Home • Particular Software
https://particula
.net/

Makers of NServiceBus, the most developer-friendly distributed systems platform for .NET…

68.
Microsoft Build of OpenJDK
https://www.microsof
.com/openjdk/

The Microsoft Build of OpenJDK is a new no-cost long-term supported distribution and Microsoft’s new way to collaborate and contribute to the Java ecosystem.

69.
Waratek | The Application Security Platform for Enterprise Java
https://www.warate
.com/

Deploy turnkey protection in days with accurate and performant rules that require no deployments and eliminate false-positives.

70.
Stytch – The most powerful identity platform built for developers
https://stytc
.com/

Secure and scale your product with Stytch's identity platform. From authentication to fraud protection, we have the APIs and SDKs for your use case.

71.
B2B trading over AS2 protocol | AS2 Gateway
https://as2gatewa
.com/

AS2 Gateway is an assured B2B trading platform EDI for secure file transfer via AS2. Developed by Aayu Technologies, the solution provides reliability for businesses

73.
Mobile Application Shielding | OneSpan
https://www.onespa
.com/products/application-shielding/

With OneSpan Mobile App Shielding, improve your user’s mobile app experiences while controlling fraud and defending against security threats.

74.
JCppEdit - Best IDE for Beginners
https://www.jcppedi
.com/

JCppEdit – Best IDE for Beginners to code many programs under a single environment starting from C, C++, Java to HTML, CSS, JavaScript and XML.

76.
IP Geolocation API and IP Location Lookup Tools
https://ipwhoi
.io/

Free IP Geolocation API, the most accurate data, use our API to quickly and easily integrate the location of visitors into your script or website.

77.
Maqetta
https://maqett
.org/

Maqetta - Visual authoring of HTML5 user interfaces - in the browser

79.
Home - Linux Mint
https://linuxmin
.com/

Linux Mint is an elegant, easy to use, up to date and comfortable desktop operating system.

80.
Certificate Management Solutions & SSL Certificates | Sectigo® Official
https://www.sectig
.com/

Sectigo is a leading provider of SSL certificates & automated certificate management solutions. A Certificate Authority trusted by global brands for 20+ years.

81.
Nextcloud - Open source content collaboration platform
https://nextclou
.com/

The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe

82.
Smart APIs for file-based data import | Flatfile
https://flatfil
.io/

Build the ideal data file import experience with Flatfile and turn csv, xls, xlsx, pdf and more into API-ready data. See how it works or start for free now.

83.
FireTail – API Security. As simple as import, setup, done.
https://www.firetai
.io/

Implement and enforce best practices in authentication, authorization, validation and sanitization of modern API requests and responses. Plus, centralized API audit trails and ensure governance and compliance.

84.
Migration and Cyber Resilience for AD, Entra ID & Microsoft 365
https://www.ques
.com/products/unified-communications-diagnostics/

Cyber resilience, migration and modernization for Active Directory, Entra ID and Microsoft 365 management solutions.

85.
Cryptlex | Software Licensing
https://cryptle
.com/

Easily generate license keys and validate them in your software apps. Additionally, you can offer trials, subscriptions, node-locked licenses, floating licenses, offline licenses and much more.

86.
Automated Web Apps & API Security Platform for Agile Teams
https://www.secureblin
.com/

Secure Blink ThreatSpy: AI-powered platform for web app & API security. Detect, prioritize, & remediate vulnerabilities with developer-first approach. Build secure applications with our developer-first approach.

87.
Real-Time Operating System - FreeRTOS - AWS
https://aws.amazo
.com/freertos/

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

88.
Sandworm Security: JavaScript & PHP Security Audits And License Compliance
https://sandwor
.dev/

Open source tools for securing JavaScript and PHP 🪱 Audit for security vulnerabilities, license issues, and enforce compliance. Guard your app against supply chain attacks with per-module permissions.

89.
Apache NiFi
https://nifi.apach
.org/

Apache NiFi is an easy to use, powerful, and reliable system to process and distribute data

91.
Patrix Home - Intellectual Property Management Software & Services - Liferay
https://www.patri
.com/

Patrix is an international intellectual property case management software provider with over 20 years of experience.

92.
Red Hat AMQ
https://www.redha
.com/en/technologies/jboss-middleware/amq/

A flexible messaging platform that enables real-time integration and connects the Internet of Things (IoT).

93.
GraalVM
https://www.graalv
.org/

GraalVM is an advanced JDK with ahead-of-time Native Image compilation.

94.
Drupal - Open Source CMS | Drupal.org
https://www.drupa
.org/

Drupal is an open source platform for building amazing digital experiences. It's made by a dedicated community. Anyone can use it, and it will always be free.

95.
Apache Kudu - Fast Analytics on Fast Data
https://kudu.apach
.org/

A new open source Apache Hadoop ecosystem project, Apache Kudu completes Hadoop's storage layer to enable fast analytics on fast data

96.
Stedi - The only API-first clearinghouse
https://sted
.com/

Automate transactions like real-time eligibility checks and claims processing with developer-friendly, JSON-based APIs that support thousands of payers.

97.
API Security | Protection with Seamless Integration | Imperva
https://www.imperv
.com/products/api-security/

Imperva secures APIs by monitoring and classifying sensitive data to inform a positive security model that stops attackers.

99.
Alpaquita Linux | BellSoft Java
https://bell-s
.com/alpaquita-linux/

Alpaquita Linux is the Alpine-based build fine-tuned for Java with glibc and musl support. Ideal for cloud deployment, containers, and native images.