License & Deployment Mix: 15 tools – 1 OSS, 12 SaaS. (OSS and SaaS counts can overlap when an open-source tool also offers a vendor-hosted edition.)
What Is Auction Platform Software?
Auction platform software manages the end-to-end process of running auctions – cataloging items, accepting bids (online, in-person, or both), processing payments, and settling with consignors. It replaces manual bid sheets, phone bidding, and disconnected spreadsheets with a unified platform.
Unlike generic e-commerce, auction software includes domain-specific features that general tools cannot provide:
- Online auction – fully digital bidding (timed or live-streamed) where buyers participate remotely via web or mobile app
- Live auction – in-person auction with an auctioneer calling bids; may include online simulcast for remote bidders
- Hybrid / simulcast – live auction with simultaneous online bidding, merging floor and internet bids in real time
- Timed auction – bids accepted over a defined time window; highest bid at close wins the lot
- Bidding engine – real-time bid processing with auto-bid (proxy bidding), bid increments, reserve enforcement, and anti-sniping controls
- Cataloging – lot creation with descriptions, photographs, condition reports, estimates, and category classification
- Consignment management – tracking consignor items through intake, sale, settlement, and commission calculation
- Payment processing – buyer’s premium calculation, credit card holds, invoicing, payment collection, and refund handling
- Auto-extend – extending a lot’s close time when late bids arrive, preventing sniping
The information on these pages was researched by a combination of human review and large language models. To suggest an addition or correction, please contact us. Prepared by Rhodium Systems Inc., author of the ResorsIT platform — a unified IT operations management platform for IT teams and MSPs that integrates a curated suite of open-source, commercial, and SaaS applications into a single system with shared identity, single sign-on, access control, and a common audit trail. Use this catalogue only as a starting point for your own research, and review any tool carefully against your own requirements before relying on it. Catalogue data version 2026.197.
Comparison
SSO / OIDC Comparison
OIDC is the preferred SSO protocol.
| Tool | OIDC | SAML | AD | Authentik Notes |
|---|---|---|---|---|
| WeBid | No | No | No | No SSO support |
| Ultimate Auction | No | No | No | No SSO (WP plugin) |
| Bidpath | No | No | No | No SSO support |
| LiveAuctioneers | No | No | No | No SSO support |
| Invaluable | No | No | No | No SSO support |
| Proxibid | No | No | No | No SSO support |
| AuctionNinja | No | No | No | No SSO support |
| 32auctions | No | No | No | No SSO support |
| Handbid | No | No | No | No SSO support |
| GalaBid | No | No | No | No SSO support |
| Auction Flex | No | No | No | No SSO support |
| NextLot | No | No | No | No SSO support |
| Wavebid | No | No | No | No SSO support |
| GovDeals | No | No | No | No SSO support |
| BidJS | No | No | No | No SSO support |
SSO summary: The auction platform market has virtually no SSO/OIDC support. These tools use proprietary user management systems. None of the evaluated platforms support standard OIDC or SAML protocols for Authentik integration.
Deployment Comparison
| Tool | Type | Platform | Cloud | On-Prem |
|---|---|---|---|---|
| WeBid | Self-hosted | Linux/PHP | No* | Yes |
| Ultimate Auction | WP Plugin | WordPress | No* | Yes |
| Bidpath | SaaS | Browser | Yes | No |
| LiveAuctioneers | SaaS | Browser | Yes | No |
| Invaluable | SaaS | Browser | Yes | No |
| Proxibid | SaaS | Browser | Yes | No |
| AuctionNinja | SaaS | Browser | Yes | No |
| 32auctions | SaaS | Browser | Yes | No |
| Handbid | SaaS | Browser/App | Yes | No |
| GalaBid | SaaS | Browser/App | Yes | No |
| Auction Flex | Desktop | Windows | No | Yes |
| NextLot | SaaS | Browser | Yes | No |
| Wavebid | SaaS | Browser | Yes | No |
| GovDeals | SaaS | Browser | Yes | No |
| BidJS | SaaS/Embed | Browser | Yes | No |
* = Can be self-hosted on cloud infrastructure
Core Features Comparison
| Feature | WeBid | Ult Auction | Bidpath | LiveAuct | Invaluable |
|---|---|---|---|---|---|
| Online timed | Yes | Yes | Yes | Yes | Yes |
| Live/simulcast | No | No | Yes | Yes | Yes |
| Cataloging | Basic | Basic | Yes | Yes | Yes |
| Payment | PayPal | WP plugins | Yes | Yes | Yes |
| Consignment | No | No | Yes | No | No |
| Charity | No | Yes | No | No | No |
| Government | No | No | No | No | No |
| White-label | Yes* | No | Yes | No | No |
| Feature | Proxibid | AuctNinja | 32auctions | Handbid | GalaBid |
|---|---|---|---|---|---|
| Online timed | Yes | Yes | Yes | Yes | Yes |
| Live/simulcast | Yes | No | No | Yes | Yes |
| Cataloging | Yes | Yes | Basic | Basic | Basic |
| Payment | Yes | Yes | Stripe | Yes | Yes |
| Consignment | Yes | No | No | No | No |
| Charity | No | No | Yes | Yes | Yes |
| Government | Yes | No | No | No | No |
| White-label | Yes | No | No | Yes | Yes |
| Feature | AuctFlex | NextLot | Wavebid | GovDeals | BidJS |
|---|---|---|---|---|---|
| Online timed | Yes | Yes | Yes | Yes | Yes |
| Live/simulcast | Yes | Yes | No | No | Yes |
| Cataloging | Yes | Yes | Yes | Basic | No |
| Payment | Yes | Yes | Yes | Yes | No |
| Consignment | Yes | Yes | Yes | No | No |
| Charity | No | No | No | No | No |
| Government | No | No | No | Yes | No |
| White-label | No | Yes | No | No | Yes |
* = Self-hosted, so inherently white-label
API Comparison
| Tool | REST API | Access | Documentation |
|---|---|---|---|
| WeBid | No | N/A (OSS) | N/A |
| Ultimate Auction | No | N/A | N/A |
| Bidpath | Limited | Contact vendor | Limited |
| LiveAuctioneers | Yes | Partner program | Good |
| Invaluable | Yes | Partner program | Good |
| Proxibid | Yes | Partner program | Good |
| AuctionNinja | No | N/A | N/A |
| 32auctions | No | N/A | N/A |
| Handbid | Yes | Contact vendor | Limited |
| GalaBid | Limited | Contact vendor | Limited |
| Auction Flex | Limited | Partner program | Limited |
| NextLot | Yes | Contact vendor | Good |
| Wavebid | Limited | Contact vendor | Limited |
| GovDeals | Yes | Partner program | Good |
| BidJS | Yes | Subscription | Good |
Best API: BidJS leads with its embeddable widget API designed for integration. LiveAuctioneers, Invaluable, and Proxibid offer partner APIs for auction house integration. Most smaller tools lack public APIs.
Monitoring Integration
| Tool | Telegraf | Fluent Bit | Grafana |
|---|---|---|---|
| WeBid | MySQL/Apache metrics | PHP/Apache logs | Custom dashboards |
| Ultimate Auction | MySQL/Apache metrics | WP/Apache logs | Custom dashboards |
| Bidpath | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| LiveAuctioneers | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| Invaluable | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| Proxibid | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| AuctionNinja | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| 32auctions | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| Handbid | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| GalaBid | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| Auction Flex | Win metrics* | App logs* | Custom dashboards* |
| NextLot | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| Wavebid | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| GovDeals | SaaS – infra only | SaaS – N/A | SaaS – N/A |
| BidJS | SaaS – infra only | SaaS – N/A | SaaS – N/A |
* = On-premise Auction Flex deployment only
Self-hosted tools (WeBid, Ultimate Auction) offer full monitoring via database and web server metrics. Auction Flex (desktop) can be monitored at the Windows level. SaaS tools are limited to endpoint and network monitoring.
Licensing Comparison
| Tool | License | Type | Cost Model |
|---|---|---|---|
| WeBid | GPL-2.0 | Open source | Free |
| Ultimate Auction | Freemium | WP plugin | Free; Pro from ~$100/yr |
| Bidpath | Proprietary | SaaS | Custom pricing |
| LiveAuctioneers | Proprietary | Marketplace | Commission-based |
| Invaluable | Proprietary | Marketplace | Commission-based |
| Proxibid | Proprietary | SaaS | Commission + subscription |
| AuctionNinja | Proprietary | SaaS | Commission-based |
| 32auctions | Proprietary | SaaS | Free; Pro from ~$199/event |
| Handbid | Proprietary | SaaS | From ~$500/event |
| GalaBid | Proprietary | SaaS | From ~$500/event |
| Auction Flex | Proprietary | Desktop | One-time license |
| NextLot | Proprietary | SaaS | Custom pricing |
| Wavebid | Proprietary | SaaS | From ~$99/mo |
| GovDeals | Proprietary | Marketplace | Commission-based |
| BidJS | Proprietary | SaaS | From ~$99/mo |
Tools
15 tools.
32auctions
32auctions is a simple online auction platform designed primarily for charity and fundraising auctions.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Auction Flex
Auction Flex is a Windows desktop auction management application designed for professional auction houses.
License: Proprietary (proprietary) · Kind: desktop · Deploy: native · SSO: none
AuctionNinja
AuctionNinja is an online auction platform focused on estate sales, liquidation, and downsizing. It provides a marketplace and tools for estate sale companies and liquidators to run online timed auctions.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
BidJS
BidJS is an embeddable auction bidding widget designed to add real-time auction functionality to any website.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Bidpath
Bidpath is a global online and simulcast auction platform headquartered in Ireland. It provides auction houses with technology for running live, timed, and simulcast auctions with integrated cataloging, bidding, and payment processing.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
GalaBid
GalaBid is a charity and fundraising auction platform founded in Australia with growing global presence.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
GovDeals
GovDeals is the dominant online auction marketplace for government surplus asset disposal. Operated by Liquidity Services, it serves municipal, county, state, and federal government agencies across the United States and Canada.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Handbid
Handbid is a mobile-first charity and fundraising auction platform. It provides nonprofits, schools, and organizations with tools to run silent auctions, live auctions, and fundraising events through mobile apps and web browsers.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Invaluable
Invaluable is an online auction marketplace specializing in fine art, antiques, and collectibles. It connects auction houses worldwide with a global audience of collectors, dealers, and interior designers.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
LiveAuctioneers
LiveAuctioneers is one of the largest online auction marketplaces, connecting auction houses with a global audience of buyers.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
NextLot
NextLot is a cloud-based auction management platform for professional auction houses, covering cataloging, online and simulcast bidding, consignment, payment processing, and reporting.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Proxibid
Proxibid is an online simulcast auction platform that connects auction companies with a global online buyer audience.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Ultimate Auction
Ultimate Auction is a WordPress plugin that adds timed online auctions with proxy bidding, reserve prices, and WooCommerce, PayPal, and Stripe payment integration to a WordPress site.
License: GPL-2.0-or-later (OSS) · Kind: library · Deploy: native · SSO: none
Wavebid
Wavebid is a cloud-based auction and estate sale management platform. It provides tools for cataloging, pricing, online auctions, consignment tracking, and reporting – targeting estate sale companies, auction houses, and liquidators.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
WeBid
WeBid is an open-source online auction platform written in PHP. Originally forked from OpenSourceClassifieds, it provides eBay-like auction functionality for self-hosted deployments.
License: GPL-2.0-only (OSS) · Kind: web · Deploy: native · SSO: none
