Top Source-to-Pay Software Platforms in 2025: Compare the Best S2P Vendors
Looking for the best source-to-pay software to streamline procurement, improve supplier collaboration, and reduce risk in 2025? With digital transformation accelerating and procurement teams under pressure to deliver more strategic value, the right S2P platform can be a game-changer.
Using data from Olive’s rigorous 100-point evaluation model, we’ve ranked the leading S2P vendors based on functionality, user experience, integrations, configurability, and overall value. Whether you’re managing global operations or replacing spreadsheets in a growing business, this guide will help you identify the right software to match your needs.
What Is Source-to-Pay Software?
Source-to-pay (S2P) software manages the full lifecycle of procurement: from sourcing and vendor intake through to contract management, purchasing, invoicing, and payment. The best platforms integrate strategic and operational workflows, enabling organizations to:
- Run RFx events and auctions
- Manage supplier onboarding and compliance
- Automate purchase orders and invoice reconciliation
- Analyze spend in real-time
- Track supplier diversity and ESG impact
Top Source-to-Pay Vendors in 2025
Here are the top-performing S2P platforms from Olive’s 2025 report, each with a dedicated breakdown below:
Coupa
Olive Score: 8.73 / 10
Coupa is a market leader in Business Spend Management, offering a unified suite for sourcing, procurement, invoicing, expenses, and analytics. With strong AI integration and an intuitive interface, Coupa is ideal for organizations aiming to digitize procurement end-to-end. It excels in adoption, ecosystem strength, and embedded intelligence.
Strengths:
- Embedded AI and benchmarking tools
- Seamless ERP integrations (SAP, Oracle, NetSuite)
- Comprehensive module coverage
Ideal for: Enterprises with complex procurement needs and global operations.
SAP Ariba
Olive Score: 8.46 / 10
SAP Ariba remains a top choice for companies using SAP ERP. With a vast supplier network and strong governance features, it offers robust sourcing, procurement, and supplier risk tools. Ariba is especially strong in global compliance and supplier collaboration.
Strengths:
- Largest global supplier network
- Deep SAP ERP integration
- Strong compliance and risk management
Ideal for: SAP-centric enterprises and companies with global sourcing needs.
Ivalua
Olive Score: 8.30 / 10
Ivalua is known for its flexibility, allowing organizations to configure workflows and modules to fit their processes. It supports modular adoption, making it a great fit for organizations with phased implementation plans or unique compliance requirements.
Strengths:
- No-code workflow configuration
- Deep supplier and intake orchestration capabilities
- Strong public sector support
Ideal for: Organizations needing high configurability and modular rollouts.
JAGGAER
Olive Score: 8.58 / 10
JAGGAER serves complex verticals like higher education, life sciences, and public sector. It offers deep functionality in sourcing and supplier management, with vertical-specific features that make it ideal for research-driven or grant-funded environments.
Strengths:
- Advanced sourcing optimization
- Strong vertical specialization
- Flexible integrations
Ideal for: Regulated industries and multi-entity organizations.
Oracle Fusion Procurement
Olive Score: 7.65 / 10
Part of Oracle’s Cloud ERP suite, Fusion Procurement is best for organizations already using Oracle for finance or inventory. It provides tight financial integration, robust P2P tools, and strong audit controls.
Strengths:
- Real-time ERP integration
- Financial compliance and control
- Built-in analytics
Ideal for: Large enterprises seeking ERP consolidation and financial control.
Esker
Olive Score: 7.91 / 10
Esker is best known for AP automation and document workflow capabilities. While it doesn’t cover the full S2P spectrum, it shines in invoice capture, PO matching, and communication with suppliers.
Strengths:
- Best-in-class invoice automation
- Modern, user-friendly UI
- Supplier communication tools
Ideal for: Companies needing to modernize AP workflows quickly.
Zip
Olive Score: 6.29 / 10
Zip is a fast-growing intake orchestration platform focused on unifying approval workflows across finance, IT, legal, and procurement. It’s not a full-suite S2P solution but excels as a lightweight intake layer on top of existing systems.
Strengths:
- Fast implementation
- Intuitive intake experience
- Workflow automation across teams
Ideal for: High-growth organizations with fragmented vendor intake processes.
Procurify
Olive Score: 7.29 / 10
Procurify targets SMBs looking to digitize purchasing and budget tracking. With mobile-first UX and fast deployment, it’s great for teams without formal procurement departments.
Strengths:
- Easy-to-use interface
- Budget tracking and approvals
- Quick time-to-value
Ideal for: Small to mid-sized businesses transitioning from spreadsheets.
Final Thoughts
The 2025 procurement landscape offers buyers a wide range of options. Whether you’re seeking AI-powered transformation, invoice automation, or rapid intake routing, there’s a solution that fits your needs.
- Need full-suite power? Start with Coupa, SAP Ariba, or Ivalua.
- Looking for specialization? Check out JAGGAER, Esker, or Zip.
- Want fast, affordable procurement tools? Procurify is a strong entry point.
Evaluate each platform based on your size, ERP stack, team maturity, and strategic goals—and use Olive to run a tailored vendor comparison backed by real evaluation data.
Visit olive.app to explore more or run your own S2P vendor evaluation.
