FASTEN (2019-2022) focused specifically on fine-grained analysis of software package ecosystems as networks, including call graph construction and program analysis.
XWIKI
French open-source software SME with H2020 experience in automated testing and software ecosystem dependency analysis.
Their core work
XWiki is a Paris-based software company best known for its open-source enterprise wiki and collaborative knowledge management platform used by thousands of organizations worldwide. In H2020, they applied their deep software engineering expertise to two research projects: first to automated software testing techniques, then to the analysis of how software packages depend on and interact with each other across large ecosystems. Their real-world contribution lies in building and maintaining complex software systems at scale, giving them practical insight into software quality, dependency management, and code analysis that most academic partners lack. As an SME, they bridge the gap between research prototypes and deployable open-source software products.
What they specialise in
STAMP (2016-2019) addressed automated software testing amplification, where XWiki contributed as a real-world software product company subject to industrial-grade testing challenges.
Both STAMP and FASTEN relied on XWiki's role as a practitioner building and shipping large open-source software, making their codebase and ecosystem a living test bed.
FASTEN introduced call graph analysis and graph-based representations of software ecosystems, marking a move toward deeper static analysis capabilities.
How they've shifted over time
XWiki entered H2020 research through STAMP (2016-2019), where the focus was on improving automated software testing — a natural extension of their need to maintain quality in a widely deployed open-source product. By the time FASTEN started in 2019, their research engagement had shifted toward understanding software ecosystems at a structural level: how packages relate, how dependencies propagate, and how call graphs reveal actual code usage. This progression suggests a move from "how do we test our own software better" toward "how do we understand the broader ecosystem our software lives in" — a strategically valuable direction for any company operating in the open-source supply chain.
XWiki is moving toward software supply chain intelligence — understanding how packages, dependencies, and call graphs interconnect — which positions them well for future work in software security, vulnerability propagation, and ecosystem governance.
How they like to work
XWiki has participated exclusively as a consortium partner rather than a coordinator, suggesting they engage in research as an industrial practitioner bringing a real-world software product and user base rather than as a project driver. Their two projects involved consortia of moderate size, and with 19 unique partners across 10 countries they show willingness to work in diverse international teams. This profile fits an organization that contributes practical grounding — real codebases, real deployment challenges — while leaving scientific coordination to academic or larger institutional partners.
XWiki has built connections with 19 distinct consortium partners spread across 10 countries through just two projects, suggesting each consortium was genuinely international and multi-partner. Their geographic spread is European but with no apparent regional concentration, consistent with open-source software communities that are naturally distributed.
What sets them apart
XWiki is rare among H2020 participants in being a commercially active open-source software company — they do not just research software, they ship it to thousands of users, which means their research contributions are grounded in real deployment constraints and real dependency chains. For a consortium working on software analysis, testing, or ecosystem tools, XWiki offers something academic partners cannot: a large, live, open-source codebase as a test environment and a direct channel to practitioner feedback. Their dual experience in software testing (STAMP) and ecosystem analysis (FASTEN) makes them a credible partner for any project sitting at the intersection of software engineering research and open-source practice.
Highlights from their portfolio
- FASTENThe larger of XWiki's two funded projects (EUR 360,578), FASTEN tackled software ecosystem analysis at a network level using call graphs and package dependency data — directly relevant to today's software supply chain security concerns.
- STAMPSTAMP brought XWiki into an EU research consortium focused on amplifying automated test generation, giving them early exposure to academic software testing techniques applied to industrial open-source software.