If you're evaluating nonprofit auction software for an upcoming gala or fundraising event, you've almost certainly come across OneCause, GiveSmart, and Soapbox Engage. All three offer mobile bidding, event management tools, and support for live and silent auctions. The differences between them are real, but they're not always obvious from a features page.
This comparison is written for nonprofit development and events professionals who want a clear-eyed look at how these platforms actually stack up, including where each one is strong, where it has limits, and which type of organization it fits best.
In This Comparison
OneCause vs. GiveSmart vs. Soapbox Engage: At a Glance
All three platforms run auctions well. The real differences show up in CRM architecture, pricing model, and how the platform fits into the rest of your fundraising operation.
| Platform | Best For |
|---|---|
| Soapbox Engage | Salesforce or Microsoft Dynamics nonprofits that want auction data syncing to their CRM in real time, not on a schedule |
| OneCause | Nonprofits running large-scale events and auctions that want a mature, established event fundraising platform |
| GiveSmart | Organizations looking for a broad fundraising platform with a built-in donor CRM |
Soapbox Engage
Soapbox Engage
Auctions app • Real-time Salesforce and Microsoft Dynamics integration
Soapbox Engage Auctions supports live and silent auctions with mobile bidding, live displays, fund-a-need, and checkout, built around real-time integration with Salesforce and Microsoft Dynamics. It's designed for organizations that treat their CRM as the center of their fundraising operation and want auction data to flow into Salesforce immediately rather than after the fact.
Soapbox Engage takes a different approach than OneCause and GiveSmart. Rather than treating Salesforce as a separate destination for auction data, the platform is built around a direct, real-time Salesforce integration: bids, registrations, donor records, and payments sync to Salesforce as they happen throughout the event. That means staff can look up a donor's giving history mid-event, development officers can see exactly who bid on what before the thank-you calls go out, and post-event reconciliation starts from clean data rather than an export.
Soapbox Engage Auctions is also part of a broader suite of nonprofit engagement apps, including events, donations, forms, and advocacy, all sharing that same real-time Salesforce integration. For organizations that already run other fundraising activity through Soapbox Engage, auction data joins the same connected view instead of living in a separate system.
Salesforce integration: Real-time, bidirectional sync with Salesforce NPSP and Nonprofit Cloud. Data moves into Salesforce as it happens during an event, not on a schedule. Also integrates with Microsoft Dynamics 365 in real time.
Pricing: Visit soapboxengage.com/pricing for current pricing. Soapbox Engage does not charge a percentage of funds raised.
Strengths
- Real-time Salesforce and Microsoft Dynamics sync during events
- No percentage-of-funds-raised fee structure
- Built for Salesforce-first organizations and deep NPSP/Nonprofit Cloud workflows
- Live displays, mobile bidding, fund-a-need, and checkout in one system
- Part of a broader nonprofit engagement suite (events, donations, forms, advocacy) sharing the same integration
Limitations
- Best suited to organizations already using Salesforce or Microsoft Dynamics
- Narrower fit: if your priority is a broad all-in-one platform with a built-in donor CRM, another tool may be a better fit
OneCause (Now Part of Bonterra)
OneCause
Acquired by Bonterra in October 2025 • Previously known as BidPal
OneCause is one of the most established names in nonprofit event fundraising, with roots going back to its original BidPal mobile bidding product. The platform covers mobile bidding, live and silent auctions, ticketing, event registration, sponsorship management, fund-a-need appeals, and peer-to-peer fundraising. It also includes text-to-donate and online auction capabilities for campaigns outside of live events.
In October 2025, OneCause was acquired by Bonterra, a larger nonprofit technology company. The acquisition brings OneCause into Bonterra's broader fundraising and engagement portfolio. Organizations evaluating the platform may want to ask about product roadmap, integrations, and support as part of their vendor evaluation.
Salesforce integration: OneCause offers Salesforce integration for transferring supporter and fundraising data into Salesforce, with synchronization options that include scheduled and on-demand transfers. Supporter records map to Contacts or Accounts, and fundraising activities map to Opportunities. Confirm the current sync frequency, supported objects, and available field mappings for your specific OneCause configuration.
Pricing: OneCause offers multiple pricing structures depending on the fundraising products and event needs. Request current pricing directly from OneCause.
Strengths
- Mature, feature-rich auction platform with deep mobile bidding capabilities
- Supports in-person, virtual, and hybrid events
- AI-assisted item descriptions and bid recommendations
- Strong event-night support reputation
- Flexible pricing options
Limitations
- Salesforce sync is scheduled or on-demand, not real-time
- Limited customization options for reports and communications
- Product direction and support structure are still settling in following the Bonterra acquisition
GiveSmart (by Momentive Software)
GiveSmart
GiveSmart, by Momentive Software
GiveSmart is a broad fundraising and donor management platform that combines event management, auctions, campaigns, peer-to-peer fundraising, text-to-donate, and a built-in donor CRM. GiveSmart has expanded over the years through acquisitions, including MobileCause and SimpliFundraisingCRM.
One of GiveSmart's distinguishing features is that it includes a native donor CRM alongside its event tools, positioning it as a more all-in-one solution for organizations that don't use a separate CRM like Salesforce. For those that do use Salesforce, GiveSmart offers a Salesforce Connector available on the AppExchange, with scheduled or on-demand data sync.
Salesforce integration: GiveSmart offers a Salesforce Connector listed on AppExchange that maps donor and transaction data to Salesforce Contacts and Opportunities. Sync can be scheduled or run on demand. GiveSmart also supports integration with other CRMs, including Virtuous and Raiser's Edge, through Omatic. Confirm available mappings and sync frequency for your configuration.
Pricing: GiveSmart offers both subscription-based plans and a pay-as-you-go option with no annual subscription fee, with organizations paying a transaction fee when payments are processed. Pricing and transaction costs vary by plan and should be confirmed directly with GiveSmart.
Strengths
- Broad platform covering auctions, campaigns, text-to-give, and donor CRM
- Built-in live event displays and seating management
- 24/7 support and on-site Campaign Technician option
- Supports multiple fundraising formats beyond auctions
- AppExchange-listed Salesforce Connector
- Pay-as-you-go option with no annual subscription fee
Limitations
- Salesforce sync is scheduled or on-demand, not real-time
- Built-in CRM adds complexity for organizations that already run Salesforce as their system of record
See Soapbox Engage Auctions in Action
See how mobile bidding, paddle raises, checkout, and live event activity flow directly into Salesforce in real time.
Start a Trial See a DemoSide-by-Side Feature Comparison
| Feature | OneCause | GiveSmart | Soapbox Engage |
|---|---|---|---|
| Mobile bidding | Yes | Yes | Yes |
| Silent auction | Yes | Yes | Yes |
| Live auction | Yes | Yes | Yes |
| Fund-a-need / paddle raise | Yes | Yes | Yes |
| Ticketing & registration | Yes | Yes | Yes |
| Live event displays | Yes | Yes | Yes |
| Text-to-donate | Yes | Yes | No |
| Peer-to-peer fundraising | Yes | Yes | Yes |
| Built-in donor CRM | No | Yes | No (uses Salesforce / Dynamics) |
| Salesforce integration | Scheduled / on-demand sync | Scheduled / on-demand sync | Real-time sync |
| Microsoft Dynamics integration | No | No | Yes, real-time |
| Virtual / hybrid events | Yes | Yes | Yes |
| CRM approach | Salesforce integration (scheduled/on-demand) | Built-in CRM, plus Salesforce Connector | Salesforce/Dynamics at the center, real-time |
| Full nonprofit engagement suite | No (auction and event tools only) | No (auction and event tools only) | Yes, auctions, events, donations, forms, advocacy, and more |
Feature information is based on publicly available product documentation as of mid-2026. Confirm specific capabilities with each vendor before making a purchasing decision.
Which Platform Fits Your Organization?
There's no universally right answer here. The best platform depends on how your organization runs its fundraising, what your CRM situation looks like, and what trade-offs you're willing to make.
Consider OneCause if:
You run large-scale gala events and want a mature, full-featured platform with strong event-night support. Ask about product roadmap and support commitments as part of your evaluation, given the recent Bonterra acquisition.
Consider GiveSmart if:
You want an all-in-one solution that covers auctions, multiple campaign types, text-to-give, and a built-in donor CRM in a single platform. It's a strong fit for organizations running frequent events across multiple formats and those that don't use Salesforce as their primary CRM.
Consider Soapbox Engage if:
Your organization runs Salesforce or Microsoft Dynamics as its CRM and wants auction data to flow in real time, not via a nightly export. Soapbox Engage Auctions is purpose-built for organizations where the CRM is the system of record and post-event reconciliation starts from clean, already-synced data. If you're also running events, donations, or other fundraising activity through Soapbox Engage, that data shares the same real-time connection instead of living in a separate system.
The Question That Matters Most
Every platform on this list will run your auction. The question is what happens to your data during and after the event, and how well that data connects to the rest of your fundraising operation.
For organizations using Salesforce, that question becomes even more specific: does the data get there in real time, or does it arrive later through a scheduled or manual sync? That distinction shapes what's possible for follow-up, stewardship, and reporting. It's the right question to ask of any platform you're seriously considering.
For more on evaluating auction software, see our guide to choosing nonprofit auction software, our breakdown of essential silent auction platform features, and our buyer's guide for Salesforce users specifically.
See Soapbox Engage Auctions in Action
See how mobile bidding, paddle raises, checkout, and live event activity flow directly into Salesforce in real time.
Start a Trial See a Demo
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