SINE

What SINE does

SINE Foundation is a Berlin-based non-profit think-and-do tank (registered as SINE e.V.) founded in July 2020 that develops open-source cryptographic software and governance frameworks to solve data sharing dilemmas. The organization's core technology is Secure Multi-Party Computation (MPC), a cryptographic protocol that enables multiple organizations to jointly compute on data without revealing their private inputs, even if all but one participant collude. SINE's primary products are Polytune, an open-source Rust-based MPC engine, and Garble, a domain-specific language and compiler that allows developers to write MPC programs in a Rust-inspired syntax that compiles into efficient binary circuits. Earlier products include Tandem, the first SMPC engine deployable through a web browser (demonstrated via Encryptle, a privacy-preserving Wordle variant). Beyond core tooling, SINE co-authors interoperability protocols — PACT (Product Carbon Transparency, with WBCSD, implemented by 35+ software solutions) and iLEAP (logistics emissions data exchange, with Smart Freight Centre, implemented by 15+ companies).

SINE operates a non-profit business model, funding operations through research grants (e.g., BMFTR-funded ATLAS project), project partnerships, and consulting engagements. All software is published under permissive open-source licenses and distributed free of charge via GitHub. The go-to-market is primarily partnership-driven: SINE collaborates with large coalitions (WBCSD, 200+ members), government agencies (Frankfurt Health Department, Metropolregion Rhein-Neckar), ClimateTech companies (Cozero), and academic institutions (HPI, TU Dresden). Customer segments span sustainability-focused organizations needing to share emissions data, public-sector entities requiring privacy-preserving analytics, and industry coalitions building interoperable data networks. SINE does not disclose revenue, and the organization is governed by a board (Vorstand) of four members with a small core team supplemented by academic and consulting partners.

Name

SINE

Legal name

SINE e.V.

Website

https://sine.foundation

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

SINE Foundation is a Berlin-based non-profit that develops open-source Secure Multi-Party Computation (MPC) software (Polytune, Garble) and co-authors interoperability protocols (PACT, iLEAP) to enable privacy-preserving data collaboration for sustainability organizations, government agencies, and industry coalitions.

Ownership category

akta.pro rank

Product category

Privacy-Preserving Computation Software

NAICS

Software Publishers (5132), Custom Computer Programming Services (541511), Scientific Research and Development Services (5417)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Services-Prepackaged Software (7372), Services-Computer Programming Services (7371)

akta.pro primary industry

Secrets Management (Passwords, API Keys, Tokens) (HDADAFAD)

akta.pro secondary industry

Coordination & Contributor Management (tasks, bounties, roles) (FSAPAHAD)

Keywords

• Privacy-preserving computation
• Secure multi-party computation
• Data collaboration governance
• Open-source cryptography
• Carbon transparency protocols

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Revenue model

1. Non-profit / Grant funded: SINE Foundation is a registered non-profit organization (SINE e.V.) in Berlin, Germany. Revenue appears to come from research grants (e.g., ATLAS project funded by Federal Ministry of Education and Research), project partnerships, and potentially consulting engagements with partner organizations. The organization publishes open-source software free of charge.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

SINE Foundation develops open-source cryptographic software and governance mechanisms that enable organizations to collaborate on sensitive data without revealing private inputs. Its primary products are Polytune, an open-source Secure Multi-Party Computation (MPC) engine written in Rust, and Garble, a Rust-inspired domain-specific programming language and compiler that translates programs into MPC circuits. SINE also co-authors data-exchange protocols (PACT for product carbon footprints, iLEAP for logistics emissions) and publishes frameworks such as the Data Commons methodology.

Product overview

The SINE Foundation is a non-profit think-and-do tank that develops open-source cryptographic software and governance mechanisms for solving data sharing dilemmas. Its core offering combines privacy-enhancing technology (Secure Multi-Party Computation) with governance frameworks to enable organizations to share data securely while maintaining data sovereignty. The main products are Polytune (open-source Rust-based MPC engine) and Garble (a Rust-inspired domain-specific language and compiler for MPC programs), which together allow developers to build privacy-preserving applications. Additional offerings include Tandem (earlier MPC engine), the Simple Benchmarking Primitive (beta tool for secure benchmarking), the Secure Benchmarking Demo, and Encryptle (a demonstration game). SINE also provides methodology through the Data Commons Framework and protocols including PACT (product carbon footprint exchange) and iLEAP (logistics emissions data exchange), developed in collaboration with organizations like WBCSD and Smart Freight Centre. Educational resources include whitepapers and an article library.

Differentiator

Problem solved

Functional benefit

Products and services

• Polytune Open-source Rust-based MPC engine that allows multiple organizations to jointly compute on data without revealing private inputs; offers active security guarantees even if all but one participant collude.
• Garble A domain-specific language and compiler for specifying functions to be executed using MPC protocols; features Rust-inspired syntax with variables, loops, structs, enums, static typing and pattern matching, compiling programs into XOR/AND/NOT gate circuits.
• Tandem Open-source SMPC engine enabling companies to collaborate on shared data without revealing private inputs; runs on any platform without specialized hardware.
• PACT Protocol Product Carbon Transparency protocol co-authored with WBCSD for seamless exchange of product carbon footprints throughout value chains; implemented by 35+ software solutions.
• iLEAP Protocol for exchange of high-quality primary logistics emissions data at global scope, covering all transport modalities; implemented by 15+ companies.
• Data Commons Framework Framework for sustainable data sharing that defines values, building blocks, and governance structures for data collaboration; includes whitepapers on carbon accounting, digital product passports, and ESG reporting.
• Encryptle A privacy-preserving word-guessing game built on SINE's SMPC engine Tandem, demonstrating MPC through a Wordle-style interface where neither server nor user can see each other's inputs.
• Secure Benchmarking Demo Interactive demo at benchmarking.sine.dev powered by Polytune and Garble that lets organizations compare themselves against industry benchmarks without revealing underlying data.
• Carbon Benchmarking Tool START Carbon benchmarking tool co-developed with Cozero using SINE's SMPC technology, enabling companies to securely evaluate and compare emissions data without sharing in plain text.

Quantifiable outcome

• PACT Protocol implemented by 35+ software solutions enabling seamless exchange of product carbon footprints throughout value chains
• +2 more outcomes

Named customers4 records

Segments3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature4 records

Partnerships

Eleven partnerships are on record, tiered minor, core and flagship.

• University of Chicago Polsky CentreminorStrategic or Co-development Partner · 1 April 2026Partnership for India Deep Tech Accelerator. SINE at IIT Bombay is part of the accelerator network along with FITT at IIT Delhi and IIT Madras Research Park. 10-week program supporting IIT-affiliated deep tech startups.
• Frankfurt Health DepartmentcoreStrategic or Co-development Partner · 22 December 2025Collaborative proof-of-concept for privacy-preserving vaccination checks using MPC. Integrated Polytune into GA-Lotse software to reduce administrative burden under German measles protection act. Validates MPC in real public-sector workflow.
• PolyteiacoreStrategic or Co-development Partner · 17 April 2024ATLAS project partnership for privacy-preserving municipal data analysis. Polyteia integrates SINE's MPC technology into their product suite for municipalities. Jointly developing policy engine for governance of analytics tasks over sensitive data.
• WBCSD (World Business Council for Sustainable Development)flagshipStrategic or Co-development Partner · 9 November 2021SINE is technology partner for WBCSD's Carbon Transparency Partnership and Pathfinder Network. Contributing to PACT Protocol development for product carbon footprint exchange. Partnership involves 35+ stakeholders including CircularTree, IBM, iPoint, and SAP working on open interoperable network for emissions data.
• CozerocoreStrategic or Co-development Partner · 16 March 2021ClimateTech partnership with Cozero to create the Carbon Benchmarking Tool START. Cozero provides the platform and emissions analytics while SINE provides the underlying SMPC technology for secure data exchange. Companies can benchmark emissions data without revealing confidential information.
• HPI (Hasso Plattner Institute)minorStrategic or Co-development PartnerAcademic research partner in ATLAS project. Contributing cryptographic research for privacy-preserving data storage implementations.
• TU DresdenminorStrategic or Co-development PartnerAcademic research partner in ATLAS project. Contributing cryptographic research and implementations for municipal data analysis.
• Smart Freight CentrecoreStrategic or Co-development PartnerPartnership to develop iLEAP protocol for logistics emissions data exchange. iLEAP enables exchange of high-quality primary data at global scope covering all transport modalities. Implemented by 15+ companies.
• BDO LegalminorImplementation/ SI/ Consulting PartnerJoint workshop hosting on EU Data Act impact on data economy. BDO Legal provides legal expertise while SINE contributes technical perspective on secure data sharing.
• Metropolregion Rhein-NeckarminorStrategic or Co-development PartnerRegional partner in ATLAS project for defining first use cases in Baden-Württemberg and Saarland for privacy-preserving municipal data analysis.
• India Deep Tech Alliance (IDTA)minorStrategic or Co-development PartnerAlliance with $2.5 billion in committed capital backing the India Deep Tech Accelerator. Collaboration partners include Celesta Capital and Speciale Invest. Program runs April through June 2026.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• IBM: IBM participates in WBCSD's Pathfinder Network alongside SINE and offers broader privacy-enhancing technologies including FHE and confidential computing via its research and cloud portfolio. It is the broad incumbent whose enterprise reach SINE must leverage via partnerships.

Direct peers

• Duality Technologies: Duality offers a secure data collaboration platform combining homomorphic encryption and MPC for regulated industries. Like SINE, it targets cross-organizational analytics on sensitive data without exposing plaintext inputs.
• Inpher: Inpher provides an enterprise Secure Multi-Party Computation platform (XOR Platform) for privacy-preserving analytics and ML across organizations. It is the most direct commercial analogue to SINE's Polytune, serving similar regulated-industry and cross-party data collaboration use cases.
• Enveil: Enveil uses FHE to enable secure search and analytics over encrypted data, serving financial services and government customers. It addresses the same secure cross-organizational data collaboration problem SINE solves, via a complementary cryptographic approach.
• TripleBlind: TripleBlind delivers privacy-preserving computation APIs for healthcare and financial services, supporting federated learning and MPC. It competes in the same category of regulated-industry secure data collaboration that SINE targets.
• Opaque Systems: Opaque provides a confidential computing platform combining secure enclaves with MPC for collaborative AI and analytics on sensitive data. It targets enterprises that need the kind of cross-party privacy guarantees SINE offers, with a more enterprise SaaS delivery model.

Emerging players

• Partisia Blockchain: Partisia offers an MPC-based blockchain and privacy-preserving computation platform for decentralized data collaboration and tokenization. It is an emerging player intersecting Web3 and MPC where SINE could increasingly compete as it expands beyond sustainability use cases.
• Zama: Zama builds open-source fully homomorphic encryption (FHE) tooling (Concrete, fhEVM) for AI and blockchain workloads. It is an emerging alternative privacy-enhancing technology stack that overlaps with SINE's MPC positioning for confidential computation.

Regional players

• Polyteia: Polyteia is a German data and analytics platform for municipalities and is SINE's integration partner in the ATLAS project for privacy-preserving municipal data analysis. It is the closest regional peer addressing the same DACH public-sector MPC use cases.

Others

• Cryspen: Cryspen provides commercial cryptographic services and verified implementations using the hax toolchain, and is SINE's verification partner. It sits in the MPC ecosystem as an enabling technology supplier rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/sine-fdn
• LinkedInlinkedin.com/company/sine-foundation
• Xx.com/SineFdn

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SINE