B2B Contact Databases Software

While Apollo.io offers strong functionality, some contact data—particularly direct phone numbers and region-specific company details—can occasionally be outdated or lead to email bounces. The user interface can also feel a bit cluttered given the sheer number of features, which creates a learning curve for beginners. In addition, credit consumption and filtering limits on lower-tier plans could be more generous. Review collected by and hosted on G2.com.

Apollo.io addresses the fragmentation and manual inefficiency in our sales pipeline by bringing lead prospecting, contact verification, and cold email outreach together in one platform. Before Apollo, we spent far too many hours hunting for leads, verifying emails with separate third-party tools, and then moving that data into our outreach software. Now, our team can quickly identify qualified decision-makers, run automated multi-step sequences, and sync every interaction straight into our CRM. As a result, we’ve reduced prospecting time by more than 50% and have seen more consistent improvements in response rates and overall pipeline generation. Review collected by and hosted on G2.com.

Sometimes information isn't accurate but I still use that as an opportunity to contact the company and see if I can find a contact. It is less efficient but it is a place to start. I try to use it daily to assist in my efforts but can't always get around to it. I also wish there were additional ways to submit requests for changes and requests for them to update/connect with the company. Review collected by and hosted on G2.com.

Zoominfo and their database assist in increasing my productivity in finding new clients by 25% versus other tools that I have used. That is my personal measurement based on my experience with the product versus others that I currently use. Review collected by and hosted on G2.com.

The analytics stay fairly shallow. I get sent/accepted/reply rates per campaign, but digging into what actually drives performance means exporting and rebuilding the analysis elsewhere. The CRM side is also thinner than I'd like, beyond the native integrations, anything custom goes through Zapier, which adds a layer to maintain. And the credit-based Email Finder makes cost per contact hard to forecast when volume moves month to month. Review collected by and hosted on G2.com.

It solves the volume problem for a small team. I'm the only person running outbound on my market, so the constraint was never ideas, it was execution time, building lists, personalising, following up on the ones who don't answer. Waalaxy handles the sequencing and the follow-ups, so I spend my time on the conversations that actually start rather than on the mechanics of getting them started. Concretely: I can keep several hundred prospects in an active sequence instead of the few dozen I could realistically chase by hand, and nothing falls through the cracks because a follow-up didn't get sent. Review collected by and hosted on G2.com.

If I try to gather information for more than 4-5 contacts, it seems to get bogged down. Often it will just ignore some contact requests, then when I remove the others and try again, it works again. It just can't seem to handle more than 2-3 at a time accurately. Review collected by and hosted on G2.com.

I use Seamless to generate contact info, which saves me so much time. It's easy to use and for the most part very accurate, with fast response times. Review collected by and hosted on G2.com.

If I had to point out a negative, it would be this: we work with small and mid-size companies, and some of the smaller ones don’t have their contacts listed. To be fair, I can’t easily find those contacts online either. Review collected by and hosted on G2.com.

Several, actually: refining our PPC spend, gaining better visibility into lead-generation activities, and, once we implement their chat feature, being able to pinpoint who is interested in our products when they’re part of a larger organization. Review collected by and hosted on G2.com.

The credit system can be a bit frustrating when a search returns contacts that don't fully match my criteria, since I still end up spending credits on records I can't use. For a niche vertical like private aviation, coverage of direct dials is sometimes thinner than I'd like, so I occasionally have to fall back to other sources. I'd also love faster bulk exports for larger lists, as they can take a while to process. Review collected by and hosted on G2.com.

Wiza solves the problem of sourcing accurate, up-to-date contact information for hard-to-reach prospects. In my role I need to connect with private aviation brokers, who aren't always easy to find through standard databases. Wiza lets me build targeted prospect lists from LinkedIn and get verified emails and phone numbers, which saves hours of manual research and keeps my outreach data clean. This has made my prospecting far more efficient and improved my connect and reply rates. Review collected by and hosted on G2.com.

Honestly, there isn't much to dislike. If accurate data quality is your top priority, Prospeo is one of the best options out there. If I had to point to anything, I'd love to see the credit plans stretch a little further and even broader coverage for certain regions, but these are minor points and haven't stopped it from being my go-to tool. Review collected by and hosted on G2.com.

Prospeo.io solves the constant challenge of finding accurate, up-to-date contact information for prospects. Before using it, I spent a lot of time manually researching leads and still dealt with bounced emails and wrong numbers. Now I can quickly enrich my lead lists with verified emails and phone numbers, which has cut my prospecting time significantly and improved the deliverability and response rates of my outreach. The result is a cleaner pipeline and more time spent actually connecting with prospects instead of hunting for their details. Review collected by and hosted on G2.com.

The main drawback is the learning curve. 6sense is a powerful, feature-rich platform, but that also means there's a lot to learn to use it effectively — from understanding how the intent scoring model works to configuring segments, orchestration workflows, and integrations correctly. New team members in particular need meaningful ramp-up time before they can confidently use the platform to its full potential, and even experienced users can find it takes time to discover all the capabilities available. More guided onboarding, in-app walkthroughs, or role-based training paths would help shorten that ramp-up period. Review collected by and hosted on G2.com.

6sense helps us solve the problem of visibility into buyer intent before accounts ever reach out to us. Traditionally, we'd only know an account was interested once they filled out a form or engaged directly with sales — by which point competitors may already be in the conversation. With 6sense's intent data and account identification, we can see which accounts are actively researching relevant topics earlier in their buying journey, and combine that with firmographic fit to prioritize the right accounts.

This directly supports our ABM segmentation strategy: instead of treating all accounts the same, we can tier and target them based on real signals rather than assumptions. The benefit is more efficient use of marketing spend and sales time, since we're focusing effort on accounts that are actually in-market, and messaging feels more relevant because it's aligned to where the account is in the funnel. It's also improved alignment between marketing and sales, since both teams are working off the same account prioritization rather than separate lists or gut instinct. Review collected by and hosted on G2.com.

One limitation I’ve run into as an SDR is the restriction on saving and downloading contacts in smaller batches, such as the 25-contact limit at a time. When I’m working on larger prospecting campaigns, this can slow my workflow because it takes multiple steps to save or export a bigger list of prospects. It becomes especially time-consuming when I’m building target account lists at scale or trying to prepare outreach sequences quickly.

Additionally, while the platform is generally easy to use, more flexibility with bulk actions and list management would further improve productivity for SDRs handling high-volume prospecting. Even with that drawback, the quality of the data and the accuracy of the contacts still make Cognism a valuable tool for my day-to-day sales development activities. Review collected by and hosted on G2.com.

Cognism helps solve the challenge of finding accurate prospect data and reaching the right decision-makers quickly. As an SDR, it lets me cut down on prospecting time, improve connect rates thanks to verified contact information, and spend more time booking meetings and generating pipeline instead of doing manual research. Review collected by and hosted on G2.com.

Very little. Coverage is strong but not 100 percent, so for a small share of contacts no verified email is found and we simply top up the volume to compensate. That is expected for this type of tool, and the trade-off is well worth it for the accuracy we get in return. Review collected by and hosted on G2.com.

It solves the hardest part of cold outreach: getting accurate, verified contact details at scale. Instead of researching manually or buying lists full of dead addresses, we enrich our target companies with A-Leads and get clean, deliverable emails. That keeps bounce rates low, protects our sender reputation, and lets us reach the right decision-makers consistently. For an outreach agency running many campaigns at once, that reliability is exactly what we need. Review collected by and hosted on G2.com.

As a BDR, I find Nooks Workspace useful, but there are several things I dislike about the platform. The interface can sometimes feel confusing, especially when trying to quickly navigate between different features during a busy calling session. I also experience occasional issues with call quality, delays, or the platform not responding as smoothly as expected. These interruptions can be frustrating because they affect my workflow and make it harder to maintain a consistent pace during outreach. Some features could also be more intuitive and easier to access. Overall, while Nooks can be helpful for BDR work, I think improving its stability, call performance, and user experience would make it much more efficient for daily prospecting. Review collected by and hosted on G2.com.

As a BDR, Nooks helps solve the problem of managing high-volume outbound calling and keeping my prospecting workflow organized. It makes it easier to handle calls, track outreach, and move between prospects without having to rely on multiple tools. This helps me save time and stay focused on having more conversations with prospects. It also gives me a more structured workflow, which helps improve my productivity and consistency throughout the day. Review collected by and hosted on G2.com.

The first version needed a little refinement. After that, the list was much closer to the brief. Review collected by and hosted on G2.com.

BookYourData helps us create specific audiences, saving days of research on companies and contacts. The advanced filters and real-time data validation deliver direct contacts to C-level decision-makers quickly. Review collected by and hosted on G2.com.

Initial setup and configuring custom data-sharing rules can take a little bit of fine-tuning at the start. I’d also love to see even deeper customizable reporting natively in the dashboard, though the core functionality already covers what we need. Review collected by and hosted on G2.com.

Problem: Before Crossbeam, keeping track of partner connections was a manual process full of guesswork. We spent way too much time answering internal questions, digging through spreadsheets, and double-checking outdated information.

Benefit: Crossbeam gives us an accurate, real-time single source of truth. It has eliminated the endless back-and-forth requests, saved our team countless hours, and given us total visibility into our partner ecosystem so we can collaborate faster and more effectively. Review collected by and hosted on G2.com.

One of the main drawback of this LinkedIn Sales navigator is feel expensive for small business and startup companies

Limited In-Mail credits on low price plans

Data Accuracy issue for the people who switch job role

Complex search results take time to load leads and accounts information Review collected by and hosted on G2.com.

LinkedIn sales navigator solves the mail problem below

Find Qualified leads and accounts faster based on industry, role, company size and location

Using this tool we have improved sales efficiency, managing prospecting more effectively and helps to improve strong relationship for cold outreach Review collected by and hosted on G2.com.

Skrapp.io should add contact numbers. Sometimes not every email can be found or verified, but its accuracy has improved a lot recently, but this is normal for this type of service. In general it works well and helps a lot with lead generation. Review collected by and hosted on G2.com.

Skrapp.io provides mostly accurate email addresses for me, and it has been helping me a lot in finding new clients. Review collected by and hosted on G2.com.

The scheduling flexibility could be better. If you want granular control over send windows, specific time zones, custom intervals between messages, you're working around the tool more than with it.

Reporting is also fairly surface-level. I'd like deeper visibility into what's actually driving replies, not just open and response rates.

Not dealbreakers, but there's room to grow on both fronts. Review collected by and hosted on G2.com.

Cold outreach on LinkedIn is tedious at scale. Writing personalised messages one by one is not a real option when you're managing multiple pipelines across different offers. Sendpilot removes that bottleneck.

The benefit is straightforward: more conversations started, less time spent starting them. I'm not sacrificing personalisation for volume, which was always the tradeoff before.

For a solopreneur, that's not a nice-to-have. It's the difference between consistent outreach and none at all. Review collected by and hosted on G2.com.

The only downside is that some contact details can occasionally be outdated or missing, and the credits can run out quite quickly when doing a lot of prospecting. It would also be great to have a few more filtering options to narrow down exactly who you’re looking for. Review collected by and hosted on G2.com.

RocketReach eliminates the hassle of calling landlines, endless Googling, outdated contact details and bounced emails. It makes finding the right people quick and easy, helping our team save time, work more efficiently and reach more prospects. Ultimately, more quality outreach means more opportunities and more sales. Review collected by and hosted on G2.com.

I find that the retrieval of financial data and financial risk are aspects that could be improved with Delpha. Review collected by and hosted on G2.com.

I use Delpha to enrich contacts and companies and handle duplicates, including the enrichment of Siret numbers in France and VAT numbers in Europe, thus simplifying onboarding through an intuitive interface and native integration with Salesforce. Review collected by and hosted on G2.com.

Strict and Expensive Credit System: The biggest pain point for most users is how quickly credits disappear. The entry-level plans offer a relatively low number of credits, which can be highly restrictive for heavy users or businesses trying to build large outbound lists. Furthermore, unused credits typically expire at the end of the billing cycle rather than rolling over. Review collected by and hosted on G2.com.

Mr. E by EasyLeadz solves B2B data gaps by instantly providing direct mobile numbers of decision-makers directly via LinkedIn.

This benefits users by eliminating manual hunting, bypassing corporate gatekeepers, and increasing sales productivity. It is especially powerful for accessing highly accurate, hard-to-find contact details within the Indian corporate ecosystem. Review collected by and hosted on G2.com.

Just wish I had it earlier! I will say that because Collective[i] can feel “too good to be true,” it takes our sellers some time to fully trust the AI. But once they see the accuracy of the insights and how much time it saves them, it’s all systems go. The initial skepticism quickly turns into full adoption once they realize how much more productive they can be. Review collected by and hosted on G2.com.

Before Collective[i], our sales team struggled with inconsistent data, inaccurate forecasting, and inefficiencies in sales execution. Now, we have:

- Real-time, AI-driven pipeline insights that proactively highlight risks and opportunities.

- No more manual CRM updates, freeing our sellers to focus on selling.

- Better forecasting accuracy, leading to smarter decision-making.

- AI-driven deal coaching, improving win rates and seller productivity.

Overall, Collective[i] has been a game-changer for our revenue organization. If you're serious about leveraging AI to drive sales performance, eliminate manual work, and improve forecasting accuracy, Collective[i] is a must-have. Review collected by and hosted on G2.com.