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The 16 categories, in depth

These are not vendor taxonomy. They are the jobs an SDR actually does, in the order the work happens — find who to contact, work out when, write it, send it, get it answered, log it. Each one below says what the category is for and the thing buyers most reliably get wrong about it.

01 · AI SDR & Outbound

All 14

Software that finds prospects, writes the sequence and sends it. The published entry price and the signed contract value are different numbers in this category more than any other on the site.

What buyers get wrong here. None of these book meetings on their own. They send volume. Meetings come from list quality, trigger relevance and whether your sending domain survives the month — three things the software does not control.
Tools covered
14
Publish a price
7of 14
Free tier
7can be tried free
Self-serve
3buy without a call

02 · Data & Research

All 24

Finding who to contact and getting a working email or mobile for them. The layer that decides whether everything downstream is worth doing.

What buyers get wrong here. Vendors quote database size. Size is not coverage. What matters is match rate on your specific segment, and the honest way to test it is to run a list of 50 accounts you already know through a trial and count how many come back right.
Tools covered
24
Publish a price
18of 24
Free tier
14can be tried free
Self-serve
19buy without a call

03 · Signals & Intent

All 10

Job changes, funding, hiring, technology adoption and site visits. The difference between contacting someone and contacting them at the right moment.

What buyers get wrong here. Most intent data is a proxy for a proxy. Rank any signal by how close it sits to an actual buying decision: a new VP of Sales is close, a page view is not, and third-party topic intent is usually the furthest away while being the most expensive.
Tools covered
10
Publish a price
7of 10
Free tier
3can be tried free
Self-serve
5buy without a call

04 · Writing & Messaging

All 10

General assistants and sales-specific coaches that draft, tighten and score the message before it goes out.

What buyers get wrong here. These fix the sentence, not the offer. A perfectly written email about something nobody wants performs exactly as badly as a clumsy one, and the reply rate will tell you which problem you actually have.
Tools covered
10
Publish a price
10of 10
Free tier
8can be tried free
Self-serve
10buy without a call

05 · Sequencing & Sending

All 12

Mailboxes, warmup, sending infrastructure and the multi-touch cadences that run on top of them.

What buyers get wrong here. Every tool here reports delivery rate, which is close to meaningless. Inbox placement is what matters and almost nobody measures it. Track reply rate instead, because it is the metric the filters themselves weight.
Tools covered
12
Publish a price
12of 12
Free tier
5can be tried free
Self-serve
12buy without a call

06 · LinkedIn & Social

All 8

Connection requests, InMail, social selling and the automation layers that scale them.

What buyers get wrong here. Account restriction risk is permanent and no vendor can indemnify you against it. Cloud-based tools reduce the risk relative to browser extensions; none of them remove it, and a restricted profile takes your network with it.
Tools covered
8
Publish a price
7of 8
Free tier
2can be tried free
Self-serve
6buy without a call

07 · Meetings & Scheduling

All 5

Booking links, routing rules and the tooling that decides whether a booked meeting becomes a held one.

What buyers get wrong here. The metric that matters is held meetings, not booked. A 20% no-show rate is normal, which means one meeting in five you celebrate never happens. Reminder and reschedule flows move that number more than any routing feature.
Tools covered
5
Publish a price
5of 5
Free tier
2can be tried free
Self-serve
4buy without a call

08 · Recording & Coaching

All 16

Notetakers, conversation intelligence and coaching tools that turn what was said into something a manager can act on.

What buyers get wrong here. Recording is cheap and reviewing is not. Most teams buy this, generate thousands of hours nobody watches, and conclude the tool failed. Decide who reviews what, weekly, before you buy anything in this category.
Tools covered
16
Publish a price
6of 16
Free tier
6can be tried free
Self-serve
6buy without a call

09 · CRM & Pipeline

All 10

Where the activity gets logged and the pipeline gets managed. Every other tool on this site writes into one of these.

What buyers get wrong here. Choose for the reporting you need, not the features you like. The CRM is the hardest thing on this list to leave, and the migration cost is the real price rather than the seat rate.
Tools covered
10
Publish a price
7of 10
Free tier
2can be tried free
Self-serve
6buy without a call

10 · Enablement & Content

All 10

Video, decks, documents, proposals and signatures. The material a rep sends between the first reply and the closed deal.

What buyers get wrong here. Content engagement tracking flatters itself. Knowing a prospect opened a deck tells you far less than a reply does, and optimising for the trackable signal over the real one is how teams end up with dashboards and no pipeline.
Tools covered
10
Publish a price
10of 10
Free tier
9can be tried free
Self-serve
10buy without a call

11 · Outbound Voice & Dialers

All 11

Parallel dialers, AI cold callers and the tools that put a rep or an agent on the phone. Priced per seat, per minute, or both at once.

What buyers get wrong here. Connect rate, not dial rate, is the number that matters. A dialer that places four times the calls into the same answer rate has quadrupled your carrier bill and nothing else.
Tools covered
11
Publish a price
4of 11
Free tier
0can be tried free
Self-serve
4buy without a call

12 · Voice Agent Platforms

All 34

Build-your-own voice agents: orchestration, turn-taking, interruption handling and telephony glue. This is where the advertised per-minute rate diverges furthest from the invoice.

What buyers get wrong here. Bring-your-own-key pricing means the headline rate is orchestration only. Speech-to-text, the model and text-to-speech land on separate bills and roughly triple the number.
Tools covered
34
Publish a price
19of 34
Free tier
20can be tried free
Self-serve
21buy without a call

13 · Voice Infrastructure

All 35

The components a voice agent is made of — recognition, synthesis, transport, telephony. Bought directly by teams building their own stack, and rebilled to everyone else inside a platform fee.

What buyers get wrong here. Latency numbers are quoted as time-to-first-byte, which is not what a caller experiences. Mouth-to-ear includes endpointing, the model and the network, and it is typically three to five times the quoted figure.
Tools covered
35
Publish a price
30of 35
Free tier
30can be tried free
Self-serve
31buy without a call

14 · Inbound Qualification

All 18

Agents that work the traffic you already have — routing, qualifying and booking from the website, the form fill and the inbound call.

What buyers get wrong here. Speed-to-lead is real but it is bounded. Once you are answering inside a minute, further speed buys nothing, and most of these are sold on a metric you have already saturated.
Tools covered
18
Publish a price
5of 18
Free tier
2can be tried free
Self-serve
5buy without a call

15 · Vertical Voice Agents

All 24

Voice agents sold into one industry with the integrations already built — clinics, dealerships, restaurants, logistics. You pay more per minute and skip the integration project.

What buyers get wrong here. The vertical premium is only worth it if the integration is the hard part. Where the workflow is generic, you are paying a multiple for a system prompt someone else wrote.
Tools covered
24
Publish a price
8of 24
Free tier
4can be tried free
Self-serve
7buy without a call

16 · Enterprise CCaaS

All 23

Contact centre platforms with voice AI bolted on or built in. Priced per seat, negotiated annually, and almost never quoted publicly.

What buyers get wrong here. The AI is a line item on a seat contract you are signing anyway. Evaluate the platform first — nobody has ever been happy having chosen a contact centre for its bot.
Tools covered
23
Publish a price
13of 23
Free tier
2can be tried free
Self-serve
9buy without a call

264 tools in total. Category counts are derived from the directory itself rather than written down here, so they cannot drift apart from it.